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Plastic Surgery Weekly

The week in peer-reviewed plastic surgery research
Issue 6Sun, Jun 21, 2026258 screened · 75 selected
This Week in Brief

The WAFER feasibility RCT in Plast Reconstr Surg randomised flexor tendon repair to WALANT versus general or regional anaesthesia and found near-identical 6-month total active motion (60.3 vs 67.6), but WALANT patients returned to work at a mean 3.0 versus 6.7 weeks and cost 54% less intraoperatively. A 40-year free jejunal-flap series in J Plast Reconstr Aesthet Surg introduces a 0-12 bedside score that flagged every episode of vascular compromise (100% sensitivity, 76.5% specificity) against 97.7% overall flap survival. In partial-thickness burns, a multicentre RCT in Burns found PermeaDerm non-inferior to porcine acellular dermal matrix yet re-epithelialising faster by day 7 (55.6% vs 27.0% in superficial burns, p=0.012) and cutting median healing by 3 days. A second Burns cohort reports that secondary tendon and nerve reconstruction after free-flap coverage of electrical wrist burns roughly halved disability (median QuickDASH 26.0 vs 39.5, p<0.001). And the interim EVE trial in J Plast Reconstr Aesthet Surg found perioperative external vacuum expansion did not improve fat-graft augmentation (190.7% vs 176.4%, p=0.757) or retention in total breast reconstruction, while producing more adverse events.

Across the Field
Reconstruction & Microsurgery.

The 40-year free jejunal-flap score (above) leads a monitoring-heavy section: a Plast Reconstr Surg Glob Open meta-analysis credits flow couplers with 96.5% sensitivity and 90.9% specificity for venous compromise, most false alarms technical rather than thrombotic. A BJS Open RCT found gluteal turnover flap closure after abdominoperineal resection cost-saving by about €8,300 per patient at 12 months. In a national database, same-day plastic surgery closure during index posterior spine surgery was associated with lower 90-day wound complications than closure delayed up to a month (Ann Plast Surg). A Microsurgery meta-analysis found CTA the best-studied DIEP imaging modality, with the lowest complication rates when paired with ultrasound, and an ICG series of 112 free parascapular flaps reported fewer partial necroses and revisions without reaching significance.

Hand & Peripheral Nerve.

MISSION registry 6-month results covered ultrasound-guided carpal tunnel release in 1,082 hands, with roughly 90% satisfaction and a 0.1% reoperation rate (J Hand Surg Glob Online). At minimum 10-year follow-up, J Hand Surg Am found about 40% of unilateral carpal tunnel patients later underwent contralateral release, predicted chiefly by contralateral symptoms present at the index operation. A case-control study tied generalised joint hypermobility to wrist ganglion cysts at roughly sevenfold odds, rising with hypermobility severity. A J Hand Surg Glob Online meta-analysis of supercharged end-to-side AIN-to-ulnar motor transfer reported MRC grade ≥3 intrinsic recovery in about 80%, best within a year of injury.

Burns & Wounds.

Two picks land here: PermeaDerm's partial-thickness burn RCT and the electrical-wrist-burn reconstruction cohort (both above). A French national-centre series of older adults with burns ≥10% TBSA found the lactate/albumin ratio and Charlson Comorbidity Index each independently predicted in-hospital mortality (Burns). A Burn Model System study followed major-burn survivors for 2 years, with depression and anxiety persisting above population norms while social participation improved and the largest burns showed the greatest mental-health gains (J Burn Care Res). A 10-year J Plast Reconstr Aesthet Surg review put necrotising fasciitis mortality near 37%, with age, immunosuppression, and organ support independent predictors and a LRINEC score above 6 not prognostic. Within a structured protocol, ambulation as early as postoperative day 1 after lower-extremity grafting was not associated with increased graft loss.

Breast.

The interim EVE trial (above) leads. A propensity-matched, multi-institutional analysis found autologous and implant-based reconstruction carried similar five-year rates of new psychiatric diagnoses across anxiety, depression, mood, psychotic, personality, and behavioural disorders (Aesthetic Plast Surg). Pooled non-randomised data showed hyperbaric oxygen did not significantly reduce hematoma, skin necrosis, or reoperation after breast reconstruction, leaving its salvage benefit unproven. A robot-assisted mastectomy meta-analysis reported complication rates and margins comparable to conventional surgery at the cost of longer operative time, while in prepectoral reconstruction with Braxon ADM and smooth round implants, neoadjuvant chemotherapy tracked with markedly higher complications.

Aesthetic.

Intraoperative tranexamic acid during reduction mammaplasty was associated with a more than twofold lower rate of hematoma requiring reoperation across 656 patients (Aesthetic Plast Surg). Chest masculinisation surgery produced large 6-month BODY-Q gains in transmasculine patients, chest satisfaction rising from 24% to 82% and psychological well-being from 24% to 62% (JPRAS Open). A meta-analysis linked breast reduction to reduced breastfeeding success while augmentation and nipple repair were not, with outcomes varying by pedicle technique (Aesthet Surg J). A 22-year multicentre analysis put inpatient genioplasty complications near 10%, concentrated in older patients and osseous procedures.

Sarcoma & Oncology.

In Marjolin ulcer, standard cutaneous SCC staging failed to stratify outcomes whereas oral-cavity depth-of-invasion thresholds separated metastatic risk (Burns). A meta-analysis in Acta Derm Venereol found ex vivo confocal microscopy highly accurate for diagnosing basal cell carcinoma in specimens but only moderately sensitive for margin assessment. An Ann Plast Surg analysis tied male sex and head-and-neck primaries to isolated hematogenous melanoma metastasis despite negative sentinel nodes.

Artificial Intelligence in Surgery.

A repeated-inference study in J Plast Reconstr Aesthet Surg found multimodal large language models gave unstable, inconsistent burn-photograph assessments, with no model combining high accuracy and high reliability. An AI-ECG tool for preoperative testing in noncardiac surgery flagged most patients as low-risk, who then had very low 30-day event rates whether or not advanced cardiac testing followed (J Med Internet Res). A scoping review in Burns documented inconsistent reporting and frequent ethical omissions, including unavailable code and data, across AI studies using burn image datasets. ChatGPT-4.5 outscored Google Gemini on breast-augmentation questions graded by blinded board-certified surgeons.

Translational & Hallmark Medicine.

Nature Communications reports tissue-engineered laryngotracheal grafts from decellularised porcine meniscus seeded with ear-cartilage progenitor cells outperforming autologous costal cartilage in rabbits. In a rat flap model, subcutaneous bovine colostrum-derived exosomes raised skin-flap survival from roughly 52% to 71% and increased microvessel density (Plast Reconstr Surg). Bulk RNA sequencing nominated UQCRC1, PRDX4, and PDK2 as mitochondrial and cell-death biomarkers in keloid tissue, while a separate study placed FOXM1 atop a BMP4/Smad1/5/8 axis driving keloid fibroblast proliferation (Burns). PLLA microspheres degrading into lactate drove adipocyte dedifferentiation and improved fat-graft volume retention in mice (Aesthetic Plast Surg).

Cases.

A single case in Plast Reconstr Surg Glob Open completed both arterial and venous microsurgical anastomoses in autologous breast reconstruction entirely with the da Vinci robot. A J Hand Surg Glob Online report describes an ulnar artery aneurysm missed by noninvasive imaging and angiography but confirmed at exploration, cautioning that hypothenar hammer syndrome cannot be excluded by imaging alone. A hemi-hamate arthroplasty series for delayed, comminuted dorsal PIP fracture-dislocations restored a mean active arc near 82°.

WAFER Trial: A randomized controlled trial comparing Wide-awake Local Anesthesia No Tourniquet (WALANT) to General and Regional Anesthesia with tourniquet for Flexor Tendon Repair.

In a feasibility randomized trial, WALANT and general/regional anesthesia gave similar 6-month hand function after flexor tendon repair, while WALANT lowered intraoperative costs and was associated with earlier return to work.
Overview

A multicenter, assessor-blinded RCT of 60 patients randomized 1:1 to primary flexor tendon repair under WALANT or general/regional anesthesia with tourniquet, assessing trial feasibility alongside range of motion, strength, complications, costs, and patient-reported outcomes (per-protocol n=56).

Key Findings
  • At 6 months, mean total active motion was 67.6 (GA/RA) versus 60.3 (WALANT), a small between-arm difference.
  • Tendon rupture occurred in two GA/RA and three WALANT patients, while Michigan Hand Questionnaire scores were consistently higher in the WALANT arm across domains.
  • WALANT patients returned to work earlier (mean 3.0 vs 6.7 weeks), and intraoperative costs were 54% lower (-£398, 95% CI -£509 to -£287).
Caveat

This was a feasibility trial of only 60 patients, underpowered to detect clinically meaningful differences in function or rupture, so the small between-arm differences cannot be read as equivalence.

Postoperative monitoring of free jejunal flaps: A composite clinical scoring system based on a 40-year institutional series and systematic review.

A 0-12 bedside scoring system based on four intestine-specific signs detected every episode of vascular compromise in monitored free jejunal flaps, suggesting it may support timely recognition of flap failure.
Overview

A retrospective single-center series of 351 free jejunal flaps (1984-2025) paired with a PRISMA systematic review, used to formalize a composite 0-12 monitoring score (peristalsis, luminal secretion, serosal color, pin-prick bleeding) assessed via an exteriorized sentinel segment.

Key Findings
  • Overall flap survival was 97.7%, with vascular compromise in 3.4% of cases at a median detection time of 2.5 h (IQR 2.0-4.0).
  • Among compromised flaps, salvage was achieved in 33.3%.
  • In the alert subgroup, the score showed 100% sensitivity and 76.5% specificity (PPV 75%) with no missed events.
Caveat

Diagnostic performance was reconstructed retrospectively and assessed only in flaps that already triggered an alert, so the reported sensitivity and specificity do not come from the full cohort and likely overstate real-world accuracy.

PermeaDerm accelerates early wound healing in partial-thickness burns: A multicenter randomized controlled trial.

In partial-thickness burns, PermeaDerm matched porcine acellular dermal matrix overall but achieved faster early re-epithelialization, shortening median healing time by about 3 days.
Overview

A multicenter RCT of 184 patients in China with partial-thickness burns randomized 1:1 to PermeaDerm or porcine acellular dermal matrix (ADM), with complete re-epithelialization by day 14 (superficial) or 21 (deep) as the primary endpoint.

Key Findings
  • PermeaDerm was non-inferior to ADM for the primary endpoint of complete re-epithelialization.
  • By day 7, more wounds had re-epithelialized with PermeaDerm for both superficial (55.6% vs 27.0%, p=0.012) and deep (37.2% vs 12.7%, p=0.005) burns.
  • Median time to complete re-epithelialization was 3 days shorter with PermeaDerm for both depths, while pain and complication rates were similar.
Caveat

The trial was conducted entirely in Chinese centers and powered for non-inferiority, so the early-healing advantages are secondary endpoints whose generalizability and clinical importance remain uncertain.

External vacuum expansion in autologous fat transfer as total breast reconstruction: Is it worth it? The interim analysis of the multicentre randomised controlled EVE trial.

An interim analysis found that perioperative external vacuum expansion did not improve fat graft augmentation or retention in total breast reconstruction and was associated with more complications.
Overview

An interim analysis of a multicenter RCT of 53 women undergoing total breast reconstruction by autologous fat transfer, randomized 2:1 to perioperative external vacuum expansion (EVE) or none, with MRI-based augmentation and graft retention at six months as primary outcomes.

Key Findings
  • Mean augmentation was 190.7% with EVE versus 176.4% without (adjusted difference 14.6%, 95% CI -80.0 to 109.1, p=0.757).
  • Graft retention was 39.3% with EVE versus 34.9% without (difference 4.5%, 95% CI -6.4 to 15.4, p=0.405), with no significant between-group difference.
  • The EVE group had more adverse events (22 AEs and 5 SAEs versus 3 AEs and 2 SAEs), predominantly skin-related.
Caveat

This is an underpowered interim analysis of 53 patients with quality-of-life outcomes not yet reported, so both the lack of benefit and the safety signal are preliminary.

Secondary reconstruction of tendons and nerves improves long-term function in electrical burns of the wrist: A retrospective cohort study.

In electrical wrist burns treated with free flap coverage, patients who underwent secondary tendon and nerve reconstruction had better long-term hand function than those who did not.
Overview

A single-center retrospective cohort of 42 men with type II/III electrical wrist burns treated with free flap coverage, comparing 20 who received secondary tendon/nerve reconstruction with 22 who did not, using QuickDASH at ≥6 months as the primary outcome.

Key Findings
  • The reconstruction group had a significantly better median QuickDASH (26.0 vs 39.5, p<0.001) than the non-reconstruction group.
  • Reconstruction comprised tendon grafting (80%), tenolysis (80%), and nerve grafting (20%), performed at a mean of 6.15 months post-injury.
  • The two groups were comparable in age, injury severity, and initial flap outcomes at baseline.
Caveat

With only 42 retrospectively analyzed, non-randomized patients, unmeasured differences in who was selected for reconstruction may account for the observed functional advantage.

Reconstruction & Microsurgery

10 papers this week

Postoperative monitoring of free jejunal flaps: A composite clinical scoring system based on a 40-year institutional series and systematic review.

A 0-12 bedside scoring system based on four intestine-specific signs detected every episode of vascular compromise in monitored free jejunal flaps, suggesting it may support timely recognition of flap failure.
Overview

A retrospective single-center series of 351 free jejunal flaps (1984-2025) paired with a PRISMA systematic review, used to formalize a composite 0-12 monitoring score (peristalsis, luminal secretion, serosal color, pin-prick bleeding) assessed via an exteriorized sentinel segment.

Key Findings
  • Overall flap survival was 97.7%, with vascular compromise in 3.4% of cases at a median detection time of 2.5 h (IQR 2.0-4.0).
  • Among compromised flaps, salvage was achieved in 33.3%.
  • In the alert subgroup, the score showed 100% sensitivity and 76.5% specificity (PPV 75%) with no missed events.
Caveat

Diagnostic performance was reconstructed retrospectively and assessed only in flaps that already triggered an alert, so the reported sensitivity and specificity do not come from the full cohort and likely overstate real-world accuracy.

Evaluating the Efficacy and Utility of Preoperative Computed Tomography Angiography in Perforator Flap Surgeries: A Systematic Review and Meta-Analysis.

A meta-analysis suggests CTA remains the best-studied imaging modality for DIEP flap planning, and combining CTA with ultrasound was associated with the lowest complication rates.
Overview

A systematic review and meta-analysis of 32 studies (3238 patients) comparing preoperative imaging modalities (CTA, ultrasound, MRA, and others) for DIEP flap breast reconstruction, with imaging-to-surgical perforator correlation and complications as outcomes.

Key Findings
  • Pooled perforator utilization was highest with MRA (92%), followed by CTA (87%) and ultrasound (85%).
  • Overall complications occurred in 13.8% of patients, with ultrasound alone showing the highest rate (17.3%) versus CTA alone (13.9%) and CTA+US (10.8%).
  • The difference between ultrasound alone and CTA+US was statistically significant (RR=0.63, p=0.0123), whereas CTA alone did not differ significantly from the other strategies.
Caveat

The pooled studies were predominantly observational with CTA used in nearly all of them, so cross-modality comparisons are confounded by indication and by the small numbers using alternatives.

Recipient Vessel Selection in Free Flap Phalloplasty: A Systematic Review and Single-Arm Meta-Analysis.

In free flap phalloplasty, the deep inferior epigastric artery carried a low thrombosis rate, while the higher thrombosis seen with the femoral artery appeared driven by interpositional grafts rather than the vessel itself.
Overview

A systematic review and single-arm meta-analysis of 1976 phalloplasty cases from 46 articles comparing deep inferior epigastric artery (DIEA, 71.5%) versus femoral artery (FA, 28.5%) recipient vessels for thrombosis and flap outcomes.

Key Findings
  • Pooled arterial and venous thrombosis rates were 2.0% and 2.2% across all cases.
  • An interpositional vein graft or AV loop with the FA carried a markedly higher arterial thrombosis rate (16.0%) than direct FA anastomosis (0.1%) or DIEA (1.2%, both p<0.001).
  • With patent vessels, partial flap necrosis was less frequent with direct FA anastomosis (0.6%) than with the DIEA (6.2%, p=0.016).
Caveat

This pooled analysis of heterogeneous published cases is prone to selection and reporting bias, and because vessel choice was not randomized, confounding by indication (why a graft or loop was needed) limits causal inference.

Cost-effectiveness of the gluteal turnover flap for perineal wound closure after abdominoperineal resection: randomized clinical trial.

A randomized trial found that gluteal turnover flap closure after abdominoperineal resection was cost-saving compared with primary closure, by about €8300 per patient at 12 months.
Overview

A secondary analysis of the multicenter BIOPEX-2 RCT (165 of 175 patients) comparing perineal closure with a gluteal turnover flap versus primary closure after abdominoperineal resection for rectal cancer, evaluating 12-month cost-effectiveness and quality of life.

Key Findings
  • Mean total cost was €45,079 with the gluteal turnover flap versus €53,397 with primary closure, a reduction of €8318 (95% CI €928 to €15,709).
  • Primary closure incurred higher outpatient, specialized wound (mean €1200 vs €720), and home care (mean €3842 vs €2504) costs.
  • Patients with perineal complications reported lower EQ-VAS and EQ-5D scores, but no significant quality-of-life difference between randomization groups was observed.
Caveat

As a secondary cost-effectiveness analysis relying on multiple imputation for missing data, with costs drawn largely from the Dutch healthcare system, the savings may not transfer to other settings.

The Role of Flow Couplers in Free Flap Monitoring: Evidence From a Systematic Review and Meta-analysis.

Pooled data suggest flow couplers detect venous compromise in free flaps with high sensitivity (96.5%) and good specificity (90.9%), with most false alarms reflecting technical issues rather than true thrombosis.
Overview

A systematic review and meta-analysis of 11 studies totaling 1775 free flaps (876 monitored with flow couplers) pooled diagnostic accuracy and flap outcomes for flow couplers against conventional monitoring techniques.

Key Findings
  • Pooled sensitivity for detecting flap compromise was 96.5%, with specificity of 90.9%.
  • Flap failure occurred in 2.2% of flow-coupler-monitored flaps versus 3.1% of controls.
  • Flow couplers showed high negative predictive value but variable positive predictive value, with false-positive signal losses driven mainly by technical issues rather than true thrombosis; false negatives were uncommon.
Caveat

Estimates are pooled from heterogeneous, mostly non-randomized studies, and flow couplers cannot detect arterial insufficiency, so they address only part of flap monitoring.

Plastic Surgery Involvement in Index Posterior Spine Surgery Reduces Complication Rates.

In a national database, same-day plastic surgery closure during index posterior spine surgery was associated with substantially lower 90-day wound complications than closure delayed by up to a month.
Overview

A retrospective national insurance-database study of 1213 patients with plastic surgery involvement (among 320,072 posterior spine surgeries without it, 2010–2019) compared 90-day wound complications, ED visits, admissions, and reoperations by timing of plastic surgery closure.

Key Findings
  • Same-day plastic surgery closure had far lower 90-day wound complications than closure within 1 month (25.2% vs. 70.8%, P<0.001).
  • ED visits, hospital admissions, and reoperations were also significantly lower with same-day closure than with closure within 1 month.
  • Greater odds of plastic surgery consultation were associated with spinal fracture, prior spine revision, multilevel fixation, sacral fracture, male sex, and higher Charlson Comorbidity Index.
Caveat

As a retrospective claims-based comparison, the large difference may partly reflect why certain patients had delayed rather than same-day closure (confounding by indication) rather than timing alone.

Facial Synkinesis Patient Reported Outcome Measure 45-Item Survey (FSP-45).

A new 45-item facial synkinesis patient-reported outcome measure (FSP-45) demonstrated strong internal consistency and moderate-to-excellent test-retest reliability across five domains.
Overview

A prospective multi-phase validation study of 99 patients and 25 experts (2023–2025) at a single tertiary center developed and validated the 45-item Facial Synkinesis PROM through patient-informed item generation, expert content validation, and test-retest assessment.

Key Findings
  • Cronbach's α ranged from 0.888 to 0.943 initially and from 0.905 to 0.963 on retest, indicating strong internal consistency.
  • Intraclass correlation coefficients ranged from 0.553 to 0.839, indicating moderate to excellent test-retest reliability.
  • The instrument spans five domains: symptoms, involuntary movements, daily activity limitations, social impact, and self-perception.
Caveat

Responsiveness to clinical change and the minimal clinically important difference were not established, and validation came from a single center with modest patient numbers.

Comparison of Clinical Outcomes Between Transcranial and Transmaxillary Free Flap Insets in Anterior Skull Base Reconstruction.

For anterior skull base reconstruction, transmaxillary free flap insetting appears feasible for tumors with a large sinonasal component but carried a somewhat higher complication rate than the transcranial approach.
Overview

A retrospective cohort of 41 patients compared transcranial (n=23) and transmaxillary (n=18) microvascular free flap insetting for anterior skull base defects, assessing defect size, recurrence, survival, and complications.

Key Findings
  • The transcranial group reconstructed larger defects than the transmaxillary group, with vastus lateralis the primary flap choice.
  • Recurrence-free rates at 20 months were 90% (transcranial) versus 78% (transmaxillary), and 40-month overall survival was 74% versus 88%.
  • Clavien-Dindo ≥3b complications occurred in 34.7% (transcranial) versus 38.9% (transmaxillary), 35.7% overall.
Caveat

The groups were small and differed in tumor type and stage, so outcome differences may reflect case selection rather than the insetting approach itself.

Coronal urethrocutaneous fistula after hypospadias repair: A retrospective cohort study of risk factors for fistula recurrence.

Coronal location of a urethrocutaneous fistula was independently associated with roughly double the risk of recurrence after repair, but only in patients with a single fistula.
Overview

A retrospective cohort of 136 patients undergoing urethrocutaneous fistula repair (2013–2022) assessed whether coronal location and other factors predict recurrence, using modified Poisson regression with stratification by fistula number.

Key Findings
  • Independent predictors of recurrence included coronal location (RR 2.13), repeated repair (RR 2.34), higher urethral defect ratio (RR 4.30), and lack of prior corpora cavernosa reconstruction (RR 1.90).
  • Coronal location remained a significant risk factor in single-fistula patients (aRR 2.68) but not in those with multiple fistulas (aRR 0.82).
  • Overall, 31 of 136 patients (23%) developed recurrent fistula over a median follow-up of 36.2 months.
Caveat

This is a single-center retrospective study with a modest number of recurrence events, which limits the precision of the multivariable estimates.

Indocyanine green near-infrared fluorescence angiography in free parascapular flaps: Distal flap perfusion assessment in a retrospective study of 112 cases.

Intraoperative ICG angiography during free parascapular flap reconstruction was associated with lower partial necrosis and revision rates, though none of the differences reached statistical significance.
Overview

A retrospective study of 112 free parascapular flaps for lower extremity reconstruction compared intraoperative ICG near-infrared video angiography (n=45) with conventional clinical evaluation (n=67) for distal perfusion assessment.

Key Findings
  • ICG identified poorly perfused distal segments in 15 of 45 cases (33%), all of which had uncomplicated postoperative courses.
  • Partial flap necrosis occurred in 6.7% (3 of 45) of ICG flaps versus 18.0% (12 of 67) controls (p=0.09).
  • ICG-assisted reconstructions required fewer recipient-site revisions (20.0% vs. 35.8%, p=0.10) and showed a negative predictive value of 98%.
Caveat

This was a small, non-randomized retrospective comparison in which the key outcome differences did not reach statistical significance, so chance cannot be excluded.

Hand & Peripheral Nerve

10 papers this week

WAFER Trial: A randomized controlled trial comparing Wide-awake Local Anesthesia No Tourniquet (WALANT) to General and Regional Anesthesia with tourniquet for Flexor Tendon Repair.

In a feasibility randomized trial, WALANT and general/regional anesthesia gave similar 6-month hand function after flexor tendon repair, while WALANT lowered intraoperative costs and was associated with earlier return to work.
Overview

A multicenter, assessor-blinded RCT of 60 patients randomized 1:1 to primary flexor tendon repair under WALANT or general/regional anesthesia with tourniquet, assessing trial feasibility alongside range of motion, strength, complications, costs, and patient-reported outcomes (per-protocol n=56).

Key Findings
  • At 6 months, mean total active motion was 67.6 (GA/RA) versus 60.3 (WALANT), a small between-arm difference.
  • Tendon rupture occurred in two GA/RA and three WALANT patients, while Michigan Hand Questionnaire scores were consistently higher in the WALANT arm across domains.
  • WALANT patients returned to work earlier (mean 3.0 vs 6.7 weeks), and intraoperative costs were 54% lower (-£398, 95% CI -£509 to -£287).
Caveat

This was a feasibility trial of only 60 patients, underpowered to detect clinically meaningful differences in function or rupture, so the small between-arm differences cannot be read as equivalence.

Incidence, Timing, and Predictors of Staged Contralateral Carpal Tunnel Release at Minimum Ten-Year Follow-Up from Unilateral Surgery.

Over long-term follow-up, about 40% of patients having unilateral carpal tunnel release later underwent contralateral release, most strongly predicted by contralateral symptoms already present at the index operation.
Overview

A retrospective cohort of 742 patients undergoing primary unilateral carpal tunnel release (2008–2013) with a minimum 10-year follow-up assessed the incidence, timing, and predictors of subsequent contralateral release.

Key Findings
  • Contralateral release occurred in 314 patients (42%) at a median of 10.6 months, with cumulative incidence of 22%, 26%, 34%, and 40% at 1, 2, 5, and 10 years.
  • The strongest predictor was contralateral carpal tunnel symptoms at the index surgery (OR 7.2).
  • Contralateral electrodiagnostic severity (OR 1.43 per unit) and concurrent trigger finger (OR 1.80) raised the odds, whereas Black race was associated with lower odds (OR 0.44).
Caveat

As a single-network retrospective review, contralateral procedures performed outside the network would be missed, and the racial association is unexplained and may reflect access rather than biology.

Treatment of Perilunate Injuries With Radial-sided Fixation.

In a single-surgeon series, fixing only the radial side of perilunate injuries restored and maintained carpal alignment without separate lunotriquetral pinning.
Overview

A single-surgeon case series of 36 patients with acute perilunate injuries treated by radial-sided-only fixation (K-wire for ligamentous injury or headless compression screw for scaphoid fractures) assessed radiographic alignment.

Key Findings
  • All patients achieved stable carpal alignment with radial-sided-only fixation, with no lunotriquetral pinning performed.
  • At final follow-up, mean scapholunate angle was 55° (range 34°–84°), with mean scapholunate interval 1.8 mm and lunotriquetral interval 1.7 mm.
  • No patients developed VISI deformity during follow-up.
Caveat

This is a small, uncontrolled, single-surgeon series reporting radiographic outcomes without validated functional scores or a comparison group, limiting generalizability.

Early Electrophysiological Recovery After Carpal Tunnel Release in Severe Carpal Tunnel Syndrome With Absent Preoperative Nerve Potentials.

Even in severe carpal tunnel syndrome where nerve potentials are absent before surgery, some patients regain measurable nerve conduction within 3 months of release, and younger patients are the most likely to recover.
Overview

A retrospective study of 53 patients with severe carpal tunnel syndrome and absent preoperative compound muscle and/or sensory nerve action potentials who underwent open carpal tunnel release, with nerve conduction studies repeated at 3 months and multivariable logistic regression used to identify predictors of reappearance of potentials.

Key Findings
  • A subset of patients regained CMAP and/or SNAP by 3 months postoperatively, demonstrating electrophysiological recovery despite absent preoperative potentials.
  • On multivariable analysis, younger age and higher body weight were independently associated with SNAP recovery (P < .01 and P = .04).
  • Age showed the strongest association with CMAP recovery but did not reach statistical significance, and neither symptom duration nor metabolic laboratory parameters were independent predictors.
Caveat

This is a small, single-cohort retrospective study with only 3 months of follow-up, and the abstract does not report how many patients actually recovered, so the magnitude of recovery and its correlation with clinical function remain uncertain.

Glenohumeral arthrodesis improves elbow flexion in patients with adult brachial plexus injuries.

In adults with brachial plexus injury and a flail or unstable shoulder whose prior elbow flexion reconstruction had failed, glenohumeral arthrodesis was followed by improved elbow flexion strength and range of motion.
Overview

A retrospective review of 16 patients (mean age 40 years, mean follow-up 55 weeks) with adult brachial plexus injury, prior elbow flexion reconstruction, and preoperative mBMRC grade below 3 who subsequently underwent glenohumeral arthrodesis, assessing change in elbow flexion strength and motion.

Key Findings
  • Elbow flexion motion, total arc of motion, and mBMRC flexion grade all showed significant postoperative improvement.
  • Preoperative elbow flexion strength was inversely correlated with postoperative strength and arc of motion, so the weakest starting limbs gained the most.
  • Four of 16 patients failed to reach antigravity strength and two failed to improve at all, with increased age identified as a risk factor for failure to improve.
Caveat

This is a very small, single-arm retrospective series with short mean follow-up and no control group, so the improvements cannot be confidently attributed to the arthrodesis alone.

Supercharged End-to-Side Anterior Interosseous-to-Ulnar Motor Nerve Transfer: A Systematic Review and Meta-analysis.

Supercharged end-to-side AIN-to-ulnar motor nerve transfer was followed by intrinsic muscle recovery to at least MRC grade 3 in about 80% of patients, with the best near-normal recovery in traumatic injuries and when surgery was done within a year.
Overview

A systematic review and meta-analysis of 16 studies comprising 447 patients reporting outcomes after supercharged end-to-side anterior interosseous-to-ulnar motor nerve transfer for ulnar nerve pathology, using random-effects pooling of binary outcomes.

Key Findings
  • Pooled intrinsic muscle recovery to MRC grade ≥3 was 80.6%, with recovery to near-normal strength (MRC ≥4) in 64.4%.
  • Near-normal recovery was markedly higher in traumatic injuries (85.5%) than in compressive (52.9%) or mixed (33.3%) pathologies, and surgery within 12 months was associated with better MRC ≥3 recovery.
  • Mean grip strength reached 75.7% of the contralateral side, and the overall complication rate was 7.9%.
  • Residual clinical signs persisted, including Wartenberg's sign in 59.1%, Froment's sign in 17.6%, and ulnar clawing in 12.1%.
Caveat

The pooled estimates come from small, heterogeneous, mostly retrospective studies (therapeutic level III) with varied injury types and follow-up, so the consistency of recovery rates is likely overstated.

Real-World Outcomes of Ultrasound-Guided Carpal Tunnel Release in 1,082 Hands: 6-Month Results From the MISSION Registry.

In routine practice, ultrasound-guided carpal tunnel release was associated with fast recovery, large symptom and function gains, roughly 90% satisfaction, and a 0.1% reoperation rate at 6 months.
Overview

A prospective multicenter registry of 887 patients (1,082 hands) treated with ultrasound-guided carpal tunnel release after failed nonsurgical management at 22 US sites, tracking recovery time, Boston Carpal Tunnel Questionnaire scores, pain, quality of life, satisfaction, and adverse events through 6 months.

Key Findings
  • Median time to resume normal activities was 3 days (IQR 1–5) and to return to work 4 days (IQR 2–7).
  • All patient-reported outcomes improved significantly, including a −1.66-point change on the Boston Symptom Severity Scale and a −3.9-point reduction in pain severity.
  • Patient satisfaction was 89.9%, no serious adverse events occurred, and the reoperation rate was 0.1%.
  • Most procedures used wide-awake local anesthesia (82.1%) with a mean incision of 5 mm, and outcomes were similar for unilateral and simultaneous bilateral release.
Caveat

This is a single-arm observational registry with no comparison to open or standard endoscopic release and only 6 months of follow-up, so the results cannot be benchmarked against conventional techniques.

HAND-Q: A global normative data sample of 1373 participants.

This study provides the first global normative HAND-Q reference values from 1,373 healthy adults, with scores varying by age, smoking, skin type, and occupation but not by gender.
Overview

A web-based cross-sectional survey of 1,373 participants from 44 countries, recruited via the Prolific platform and convenience sampling and excluding anyone with a hand condition or trauma, to generate normative values for the appearance, function, life impact, and symptoms HAND-Q scales.

Key Findings
  • The study delivers the first normative HAND-Q reference values for the appearance, function, life impact, and symptoms scales from a healthy population.
  • Smoking status, skin type, age, and occupational factors were significantly associated with specific scales, while former smokers showed incremental gains with longer time since cessation.
  • No significant gender differences were observed across the four scales.
Caveat

The self-selected online convenience and Prolific sample may not represent the general or surgical population, limiting how directly these norms transfer to specific clinical groups.

Upper Limb Reconstruction in Arthrogryposis Multiplex Congenita: A Systematic Review.

Across the arthrogryposis literature, upper limb reconstruction mainly improves function by repositioning joints into usable arcs, with posterior elbow release, elbow flexion reconstruction, rotational and wrist osteotomies, and thumb stabilization the most consistently supported procedures.
Overview

A PRISMA-aligned systematic review of 32 studies (412 patients, 589 procedures) on nonsurgical and surgical upper limb reconstruction in arthrogryposis multiplex congenita, with a treatment algorithm developed from 13 joint-specific interventional studies.

Key Findings
  • Posterior elbow release consistently improved passive elbow flexion and functional hand-to-mouth reach.
  • Muscle transfers (latissimus dorsi, pectoralis major, Steindler flexorplasty, selective triceps) restored meaningful active elbow flexion in selected patients, though outcomes depended heavily on donor muscle quality.
  • Distal humeral rotation and carpal wedge osteotomies improved hand orientation, bimanual grasp, and rigid wrist flexion deformity.
  • Thumb-in-palm deformity was most effectively managed with first-web reconstruction and metacarpophalangeal stabilization, with emerging support for severity-based staged reconstruction.
Caveat

The evidence is limited to retrospective designs and small case series with heterogeneous, inconsistently reported outcomes (therapeutic level IV), so the algorithm reflects expert synthesis rather than comparative data.

Is Generalized Joint Hypermobility a Risk Factor in the Development of Wrist Ganglion Cysts? A Retrospective Case-Control Study.

Generalized joint hypermobility was strongly and independently associated with wrist ganglion cysts, carrying roughly a sevenfold increase in odds and a risk that rose with greater hypermobility severity.
Overview

A retrospective case-control study of 972 participants (243 patients with ganglion cysts, 729 controls) comparing Beighton scores, occupation, body mass index, and physical activity, with univariate and multivariable logistic regression to identify independent risk factors.

Key Findings
  • Hypermobility prevalence was 64% in the ganglion group versus 19% in controls, an adjusted odds ratio of 7.1 (95% CI 5.1–9.9).
  • Manual occupation was a second independent risk factor (adjusted OR 1.4, 95% CI 1.0–1.9).
  • Risk rose with greater hypermobility severity (significant positive trend across Beighton categories), while age, sex, body mass index, and physical activity did not differ between groups.
Caveat

The retrospective single-center case-control design cannot establish causation, and cases may differ from controls through unmeasured factors or referral selection.

Burns & Wounds

10 papers this week

PermeaDerm accelerates early wound healing in partial-thickness burns: A multicenter randomized controlled trial.

In partial-thickness burns, PermeaDerm matched porcine acellular dermal matrix overall but achieved faster early re-epithelialization, shortening median healing time by about 3 days.
Overview

A multicenter RCT of 184 patients in China with partial-thickness burns randomized 1:1 to PermeaDerm or porcine acellular dermal matrix (ADM), with complete re-epithelialization by day 14 (superficial) or 21 (deep) as the primary endpoint.

Key Findings
  • PermeaDerm was non-inferior to ADM for the primary endpoint of complete re-epithelialization.
  • By day 7, more wounds had re-epithelialized with PermeaDerm for both superficial (55.6% vs 27.0%, p=0.012) and deep (37.2% vs 12.7%, p=0.005) burns.
  • Median time to complete re-epithelialization was 3 days shorter with PermeaDerm for both depths, while pain and complication rates were similar.
Caveat

The trial was conducted entirely in Chinese centers and powered for non-inferiority, so the early-healing advantages are secondary endpoints whose generalizability and clinical importance remain uncertain.

Secondary reconstruction of tendons and nerves improves long-term function in electrical burns of the wrist: A retrospective cohort study.

In electrical wrist burns treated with free flap coverage, patients who underwent secondary tendon and nerve reconstruction had better long-term hand function than those who did not.
Overview

A single-center retrospective cohort of 42 men with type II/III electrical wrist burns treated with free flap coverage, comparing 20 who received secondary tendon/nerve reconstruction with 22 who did not, using QuickDASH at ≥6 months as the primary outcome.

Key Findings
  • The reconstruction group had a significantly better median QuickDASH (26.0 vs 39.5, p<0.001) than the non-reconstruction group.
  • Reconstruction comprised tendon grafting (80%), tenolysis (80%), and nerve grafting (20%), performed at a mean of 6.15 months post-injury.
  • The two groups were comparable in age, injury severity, and initial flap outcomes at baseline.
Caveat

With only 42 retrospectively analyzed, non-randomized patients, unmeasured differences in who was selected for reconstruction may account for the observed functional advantage.

Mental and Social Health Recovery after Major Burn Injuries: A Burn Model System Study.

Among adults with major burns, depression and anxiety stayed above population norms while social participation improved over 2 years, and survivors with the largest burns showed the greatest mental-health gains rather than the worst outcomes.
Overview

A retrospective multicenter longitudinal analysis of 815 adults with at least 20% total body surface area burns from the Burn Model System database, stratified into large, very large, and massive burn groups, with PROMIS, community integration, and employment outcomes assessed at 6, 12, and 24 months using mixed-effects models.

Key Findings
  • Depression and anxiety remained elevated relative to population norms, whereas social participation improved over time across all burn sizes.
  • Survivors with massive burns (≥70% TBSA) showed the greatest 24-month improvement in mental health, reaching clinically meaningful magnitude.
  • Their community integration at 24 months was comparatively preserved, coming closest to pre-injury levels despite lower perceived social-role ability and employment.
Caveat

Because outcomes were available only for patients who survived and stayed in follow-up, survivor and attrition bias may explain why the largest burns appeared to fare better, and unmeasured rehabilitation or support differences were not accounted for.

Performance of Sepsis-3 criteria in burn patients: A multicenter real-world study.

In a large burn population, standard sepsis criteria (Sepsis-3, ABA, Mann-Salinas) caught most septic patients but flagged many who were not, suggesting they perform better as screening tools than as confirmatory diagnostic tests.
Overview

A retrospective multicenter validation of 527,197 adult burn patients in the TriNetX U.S. Collaborative Network compared the diagnostic accuracy and prognostic value of Sepsis-3, American Burn Association (ABA), and Mann-Salinas criteria, using ICD-10 coded sepsis within 7 days as the reference standard.

Key Findings
  • Sensitivity was high across all three definitions (ABA 86.7%, Mann-Salinas 86.6%, Sepsis-3 81.4%), while specificity varied substantially, ranging from 45.8% for Sepsis-3 to 77.0% for Mann-Salinas.
  • Positive predictive values were uniformly low (2.5%–6.0%), reflecting overclassification in a population where only 1.4% had documented sepsis, whereas negative predictive values exceeded 99% across all criteria.
  • No significant differences in 28-day mortality emerged between definitions in propensity-matched cohorts, with all pairwise hazard ratios crossing unity.
Caveat

Sepsis was defined by administrative ICD-10 codes rather than adjudicated clinical diagnosis, so the reference standard is itself imperfect, and the very low prevalence mechanically depresses the predictive values.

Therapy Driven Protocol: Early Ambulation for Lower Extremity Grafts.

Within a structured mobility protocol, ambulating as early as postoperative day 1 after lower-extremity skin grafting was not associated with increased graft loss.
Overview

A 3-year retrospective review of 149 patients at a single verified adult burn center examined split-thickness skin grafting and/or autologous skin cell suspension to the lower extremities, testing whether the timing of early ambulation related to graft loss.

Key Findings
  • First ambulation occurred at postoperative day 1–3 (mean POD 1.05), and timing of initial ambulation showed no significant association with graft loss.
  • Twelve of 149 patients experienced minor graft loss, all of which healed with conservative management.
  • Graft loss was instead significantly associated with history of stroke, renal disorder, and previous amputation (p=0.006, 0.012, and 0.006, respectively).
Caveat

This was a single-center retrospective series with no comparison group of delayed ambulation and only 12 graft-loss events, so it cannot firmly establish the safety of early mobilization.

Epidemiology and prognostic factors in older adults with severe burns (≥10% TBSA): A 13-year retrospective study from a French national burn center.

In older adults with severe burns, the lactate/albumin ratio and the Charlson Comorbidity Index were each independently associated with in-hospital mortality, supporting a double-hit model combining acute metabolic shock and chronic comorbidity.
Overview

A retrospective single-center study of 243 patients aged over 65 with burns exceeding 10% TBSA (2012–2025, French national burn center) evaluated the lactate/albumin ratio (LAR) and Charlson Comorbidity Index (CCI) as mortality predictors; overall mortality was 35.0%.

Key Findings
  • The lactate/albumin ratio discriminated mortality strongly (AUC 0.84), comparable to lactate alone (0.81) but superior to albumin (0.74), with LAR >1.0 identified as a critical threshold.
  • On multivariate analysis the Charlson Comorbidity Index was an independent predictor of mortality (OR 1.71), alongside TBSA, inhalation injury, and LAR (OR 2.15).
  • The lethal area 50% (LA50) threshold was established at 34% TBSA.
Caveat

The design was retrospective and single-center, the biomarker analysis was complete-case (n=178 of 243), and the proposed LAR threshold is described as exploratory and cohort-specific, so cutoffs require external validation.

How the world manages acute burns: Insights from an international survey of 106 burn units across 50 countries.

An international survey of burn surgeons shows broad agreement on early debridement but wide variation between low/middle-income and high-income countries in the tools and coverage techniques available.
Overview

An international survey of 106 burn units across 50 countries (44% response rate) described diagnostic, debridement, and coverage practices through four case scenarios and standard-practice questions, comparing responses by regional economic status.

Key Findings
  • Early surgical debridement (<48 h) was most commonly described as standard care, although definitions of early grafting varied across respondents.
  • Low/middle-income and high-income countries differed in the availability of diagnostic tools, enzymatic debridement, and wound coverage techniques.
  • Further regional variation appeared among high-income countries in Europe, North America, and Oceania.
Caveat

This is self-reported practice from one respondent per hospital and is purely descriptive, so it captures stated preferences rather than actual outcomes and is subject to selection and response bias.

A ten-year update on necrotising fasciitis at a single tertiary centre: Factors influencing survival outcomes.

Over 10 years, necrotising fasciitis carried high mortality (about 37%), with age, immunosuppression, and need for organ support as independent predictors, while a LRINEC score above 6 was not independently prognostic.
Overview

A single-center retrospective study of 87 patients with confirmed necrotising fasciitis (2015–2025) at a tertiary center assessed mortality predictors and the prognostic utility of the LRINEC score using univariate and multivariate logistic regression.

Key Findings
  • Overall mortality was 36.8% (23.0% within 30 days), with ICU admission required in 58.6% of cases and a median time to theatre of 8.8 h.
  • Independent predictors of mortality included age (OR 1.104), immunosuppression (OR 6.03), and white cell count (OR 0.860), with the strongest being the need for renal replacement and/or ventilatory support (OR 23.6).
  • A LRINEC score >6 was not independently predictive of mortality.
Caveat

The cohort was small (87 patients) and single-center, so the multivariate odds ratios, especially the very wide estimate for organ support, are imprecise and prone to overfitting.

Comparative prognostic performance of early renal biomarkers for major adverse kidney events in severe burn patients.

In severe burn patients, early urine output predicted kidney outcomes poorly, whereas creatinine clearance was the strongest early predictor of major adverse kidney events.
Overview

A retrospective single-center cohort of 106 patients admitted within 24 h of severe burn injury (2018–2022) compared serum creatinine, urine output, urinary creatinine, and creatinine clearance for predicting Major Adverse Kidney Events at 30 days (MAKE30).

Key Findings
  • AKI developed in 47.2% within 48 h and 29.2% experienced MAKE30; creatinine clearance was the strongest predictor (AUC 0.80), outperforming serum creatinine (0.72), urine output (0.68), and urinary creatinine (0.63).
  • Minimum urine output did not differ significantly between MAKE30 and non-MAKE30 groups (0.54 vs 0.92 mL/kg/h, p=0.11).
  • A stricter urine-output threshold of <0.3 mL/kg/h was independently associated with MAKE30, whereas the guideline-recommended <0.5 mL/kg/h cutoff was not.
Caveat

This was a small retrospective single-center cohort in which AKI was diagnosed predominantly on urine-output criteria, which may bias the head-to-head comparison among renal markers.

Comparative efficacy and economic impact of sequential triple therapy versus nano-silver dressings in delayed-presentation low-temperature burns: A retrospective cohort study.

For small, delayed-presentation low-temperature deep burns, a triple therapy combining silver sulfadiazine, rhEGF, and Compound Huangbai Liquid was associated with faster healing, less pain, and substantially lower cost than nano-silver dressings.
Overview

A retrospective cohort of 309 patients with small (<1% TBSA) low-temperature deep burns that progressed after delayed presentation compared a triple therapy (n=165) with a nano-silver dressing regimen (n=144) for healing time, pain, infection, and cost.

Key Findings
  • Wound healing was faster with triple therapy (28±4 vs 41±5 days) and required fewer dressing changes (14±3 vs 21±4).
  • Pain scores were lower in the triple-therapy group from the second dressing change onward, with no significant difference in infection rates (2.4% vs 3.5%).
  • Both total and out-of-pocket costs were markedly lower with triple therapy (total 1508±360 vs 3735±480 CNY; out-of-pocket 302±72 vs 1904±96 CNY).
Caveat

The comparison was retrospective and non-randomized at a single center, so differences may reflect confounding by indication rather than the intervention itself, and the unusually tight standard deviations warrant scrutiny.

Breast

10 papers this week

External vacuum expansion in autologous fat transfer as total breast reconstruction: Is it worth it? The interim analysis of the multicentre randomised controlled EVE trial.

An interim analysis found that perioperative external vacuum expansion did not improve fat graft augmentation or retention in total breast reconstruction and was associated with more complications.
Overview

An interim analysis of a multicenter RCT of 53 women undergoing total breast reconstruction by autologous fat transfer, randomized 2:1 to perioperative external vacuum expansion (EVE) or none, with MRI-based augmentation and graft retention at six months as primary outcomes.

Key Findings
  • Mean augmentation was 190.7% with EVE versus 176.4% without (adjusted difference 14.6%, 95% CI -80.0 to 109.1, p=0.757).
  • Graft retention was 39.3% with EVE versus 34.9% without (difference 4.5%, 95% CI -6.4 to 15.4, p=0.405), with no significant between-group difference.
  • The EVE group had more adverse events (22 AEs and 5 SAEs versus 3 AEs and 2 SAEs), predominantly skin-related.
Caveat

This is an underpowered interim analysis of 53 patients with quality-of-life outcomes not yet reported, so both the lack of benefit and the safety signal are preliminary.

Robot-assisted versus conventional mastectomy and immediate breast reconstruction: A systematic review and comparative and single-arm meta-analysis.

A meta-analysis suggests robot-assisted mastectomy with immediate reconstruction achieves complication rates and margin status comparable to conventional mastectomy, at the cost of longer operative time.
Overview

A systematic review and meta-analysis of 30 studies (3985 patients) compared robot-assisted mastectomy with immediate breast reconstruction against conventional mastectomy, using both a comparative and a single-arm meta-analysis.

Key Findings
  • Margin status was comparable between groups (OR 1.04), while robot-assisted mastectomy was associated with lower overall complications (OR 0.76, 95% CI 0.63–0.92) and reduced intraoperative blood loss.
  • Operative time was significantly longer with the robotic approach, with an estimated learning curve of 17 procedures before a significant reduction in operating time.
  • A non-significant trend toward improved BREAST-Q scores and fewer individual complications was observed with the robotic approach, although hospital stay was longer.
Caveat

Substantial between-study heterogeneity (I²>50%), likely selection bias from offering the robotic approach to selected patients, and absent long-term oncologic data mean the apparent complication benefit may not be causal.

Risk factors and complication predictors in prepectoral breast reconstruction using ADM and smooth round implants: An observational cohort study.

In prepectoral reconstruction with Braxon ADM and smooth round implants, neoadjuvant chemotherapy was associated with markedly higher reconstruction-related complications, while a faster-integrating ADM and prolonged antibiotic prophylaxis appeared protective.
Overview

A prospective observational cohort of 140 patients (221 breasts) across two Italian cancer centers underwent immediate prepectoral implant reconstruction with Braxon ADM and smooth round implants, with binary logistic regression used to identify predictors of complications.

Key Findings
  • Complications occurred in 43.4% of breasts (96 events), comprising 29.0% mastectomy-related and 14.4% reconstruction-related; reoperation was required in 14.9% and implant removal in 7.4%.
  • Neoadjuvant chemotherapy independently predicted reconstruction-related complications (OR 18.8; p=0.026).
  • Braxon Fast versus Regular ADM (OR 0.092; p=0.013) and extended antibiotic prophylaxis (OR 0.013; p=0.004) were protective against reconstruction-related events.
  • Mastectomy flap necrosis (6.9%) and infection (3.6%) were the most frequent complications leading to implant removal.
Caveat

As an observational study without a comparison arm it cannot establish causation, and the very wide confidence interval around the neoadjuvant chemotherapy estimate reflects few events, making that effect size imprecise.

Hyperbaric Oxygen Therapy for Ischemic Complications and Salvage Following Breast Reconstruction: A Systematic Review and Meta-Analysis.

Across pooled non-randomized data, hyperbaric oxygen therapy did not significantly reduce hematoma, skin necrosis, or reoperation after breast reconstruction, leaving its benefit for ischemic complications unproven.
Overview

A PRISMA-guided systematic review and meta-analysis of seven non-randomized studies compared ischemic complications after breast reconstruction in patients receiving hyperbaric oxygen therapy (HBOT) versus standard care, with risk of bias assessed by ROBINS-I and certainty by GRADE.

Key Findings
  • HBOT showed no significant reduction in hematoma (OR 2.92; 95% CI 0.47–18.06), skin necrosis (OR 4.72; 95% CI 0.13–172.44), or reoperation (OR 2.42; 95% CI 0.89–6.55).
  • Pooled single-arm HBOT cohorts had rates of seroma 16.1%, surgical site infection 18.8%, return to the operating room for debridement 12.6%, and explantation 21.6%.
  • The authors graded the comparative evidence as insufficient and inconclusive to determine whether HBOT reduces ischemic complications.
Caveat

All seven included studies were non-randomized and at risk of bias, and the comparative estimates carry extremely wide confidence intervals, so the analysis can neither confirm nor exclude a benefit.

Somatoform Disorders Affect Decision-making of Breast Reconstruction Post-Mastectomy of Breast Cancer Patients: A Comparative Hazard Analysis.

Among mastectomy patients, a documented somatoform disorder was associated with a higher likelihood of delayed breast reconstruction but not with whether immediate reconstruction was chosen.
Overview

A retrospective cohort of 192,618 breast cancer patients in the TriNetX network who underwent mastectomy (2005–2023) was stratified by presence of a somatoform disorder diagnosis (ICD-10 F45) and propensity-score matched to compare reconstruction timing and method.

Key Findings
  • Somatoform disorders were documented in 1.6% of the cohort (3067 patients).
  • Immediate reconstruction rates were not significantly different between groups.
  • Patients with somatoform disorders were more likely to undergo delayed reconstruction, with HR 1.59 (95% CI 1.21–2.09) for autologous and HR 1.24 (95% CI 1.06–1.45) for implant-based.
  • Overall reconstruction rates within two years were modestly higher in the somatoform disorder group.
Caveat

Diagnoses and outcomes rely on administrative ICD coding, which under-captures somatoform disorders and their severity and cannot establish why reconstruction was delayed.

Autologous and Implant-Based Breast Reconstruction Demonstrate Equivalent Psychiatric Outcomes at Long-Term Follow-Up: Results from a Multi-Intuitional Propensity Score-Matched Analysis.

Autologous and implant-based breast reconstruction were associated with similar rates of new psychiatric diagnoses over five years, with no significant difference across anxiety, depression, mood, psychotic, personality, or behavioral disorders.
Overview

A propensity-matched retrospective cohort of 29,610 patients (14,805 per arm) from the TriNetX Global Collaborative Network compared new psychiatric diagnoses within 6 months to 5 years after autologous versus implant-based breast reconstruction.

Key Findings
  • No significant differences emerged for anxiety (p=0.135), depression (p=0.366), or mood disorders (p=0.991).
  • Rates were also comparable for psychotic (p=0.52), personality (p=0.61), and behavioral disorders (p=0.149).
  • Findings were consistent across the full 6-month to 5-year window, with previously reported patient-reported advantages of autologous reconstruction not reflected in psychiatric outcomes.
Caveat

Outcomes were limited to coded psychiatric diagnoses and did not include patient-reported satisfaction or quality of life, so the analysis cannot address the patient-reported advantages previously attributed to autologous reconstruction.

Advancements in Breast Lipofilling: A 12-Year Retrospective Comparative Analysis of Patient Satisfaction and Complication Rates across Fat Preparation Methods.

Cell-enriched lipotransfer for breast lipofilling was associated with higher patient satisfaction and the lowest surgical-site complication rate compared with filtration and sedimentation.
Overview

A 12-year retrospective comparative analysis of 572 breast lipofillings assessed patient satisfaction (modified BREAST-Q) and complications across three fat-processing methods: filtration, sedimentation, and cell-enriched lipotransfer (CELT).

Key Findings
  • Surgical-site complication rates were lowest with CELT at 8.0%, versus 14.9% for filtration and 16.4% for sedimentation.
  • CELT achieved the highest satisfaction (mean score 1.70, where 1 indicates very satisfied; p<0.001), compared with 2.31 for filtration and 2.43 for sedimentation.
  • Within the CELT group, complications included oil cyst formation 4.8%, hematoma 1.6%, wound-healing disorders 1.6%, and no infections.
  • Outcomes did not differ between irradiated and non-irradiated patients (p≥0.06).
Caveat

The study was retrospective and non-randomized with variable, partly short follow-up and roughly one in six interventions lost to follow-up, leaving satisfaction comparisons vulnerable to selection and recall bias.

Reconstructive conundrums in the era of pembrolizumab treatment for breast cancer: A case series review.

In patients who underwent breast reconstruction after pembrolizumab, immune-related adverse events including thyroid dysregulation, cardiac failure, and epidermolysis complicated the perioperative course, raising concern about immunotherapy's impact on reconstructive outcomes.
Overview

This case series of five patients treated with pembrolizumab before breast reconstruction, accompanied by a narrative review of immune-related adverse events, describes unexpected perioperative and postoperative complications.

Key Findings
  • The five patients experienced complications including thyroid dysregulation, cardiac failure, and epidermolysis after pembrolizumab and reconstruction.
  • Pembrolizumab use surged after the KEYNOTE-522 trial showed improved pathologic complete response in early-stage triple-negative breast cancer.
  • The authors note a paucity of data on how immunotherapy affects perioperative and reconstructive outcomes.
Caveat

As an uncontrolled five-patient case series, it cannot establish how often these complications occur or whether pembrolizumab caused them rather than other perioperative factors.

Effectiveness of pre-incision vs. post-incision PECS II block for breast reconstruction pain: A retrospective cohort study.

Surgeon-administered post-incision PECS II blocks provided similar postoperative pain control and opioid use to preoperative anesthesiologist-placed blocks in breast reconstruction.
Overview

A single-institution retrospective cohort of 89 patients undergoing mastectomy with reconstruction compared pre-incision versus surgeon-administered post-incision PECS II blocks for postoperative pain scores and opioid use (oral morphine equivalents).

Key Findings
  • Pre-incision patients reported a higher median maximum pain score during admission (8 vs 7; p=0.046).
  • First PACU and last recorded pain scores, along with 4-hour and total admission opioid use, were similar between groups.
  • On multivariate analysis adjusting for multiple clinical factors, block timing showed no association with pain scores or opioid need.
Caveat

The cohort was small, retrospective, and unbalanced (31 vs 58 patients), limiting power to detect meaningful differences and leaving residual confounding despite adjustment.

Clinical Performance of GalaFLEX® (Poly-4-Hydroxybutyrate) Scaffold Application in Aesthetic and Reconstructive Breast Surgery: A Retrospective Study.

Bioresorbable poly-4-hydroxybutyrate (P4HB) scaffold reinforcement was used across both reconstructive and aesthetic breast procedures with a low early complication rate.
Overview

A retrospective review of 31 patients (52 treated breasts) examined indications, surgical applications, and early postoperative outcomes of bioresorbable P4HB (GalaFLEX) scaffold reinforcement in implant-based breast surgery.

Key Findings
  • Indications were evenly split between oncologic and non-oncologic breasts, with diseased breasts treated in post-mastectomy reconstruction and non-diseased breasts used mainly for contralateral symmetrization.
  • Most cases involved primary implant placement, and fat grafting was a frequent adjunct technique.
  • The overall postoperative complication rate was low, with most patients recovering uneventfully.
Caveat

This was a small, single-arm retrospective series reported with descriptive statistics and short follow-up, and without a comparison group (e.g., ADM), so comparative safety and durability cannot be assessed.

Aesthetic

10 papers this week

Impact of Breast Augmentation, Reduction, and Nipple Repair on Breastfeeding Success: A Systematic Review and Meta-analysis.

Breast reduction is associated with reduced breastfeeding success while augmentation and nipple repair are not, with outcomes varying substantially by reduction pedicle technique.
Overview

A systematic review and meta-analysis of 57 studies (381,199 patients) pooling quantitative breastfeeding success rates after breast augmentation, reduction, and nipple-correction procedures, with random-effects subgroup comparisons across surgical techniques.

Key Findings
  • Breast augmentation showed no significant difference in overall breastfeeding success regardless of technique (73.4% vs 86%, p=0.405).
  • Reduction outcomes varied significantly by technique (p=0.021), with classic reduction mastopexy using horizontal (14.4%) and vertical (26.2%) pedicles producing the lowest breastfeeding success.
  • Central, superior-lateral, superomedial, and central-superior-lateral pedicle reductions preserved breastfeeding success at roughly 88-100%.
  • Nipple-correction methods did not substantially reduce breastfeeding success (84%, CI 76-89%).
Caveat

Several technique-specific estimates rest on very few patients with extremely wide confidence intervals (some spanning 0-96% or 0-100%), so the subgroup differences are statistically fragile despite the large overall sample.

Effect of Tranexamic Acid to Reduce Postoperative Hematoma in Reduction Mammaplasty: A Retrospective Analysis of 656 Patients.

Intraoperative tranexamic acid during reduction mammaplasty was associated with a more than twofold lower rate of hematoma requiring reoperation.
Overview

A retrospective single-center cohort of 656 consecutive patients undergoing reduction mammaplasty (2019-2024), comparing those who received intraoperative TXA (intravenous, topical, or both) with unexposed patients for postoperative hematoma and complications.

Key Findings
  • Hematomas requiring reoperation were lower with TXA, 2.1% vs 5.1% (OR 2.3, 95% CI 1.1-5.0; p=0.042).
  • Operative time was longer in the TXA group, 133 vs 122 minutes (p<0.001), and these patients also had higher intraoperative blood loss and breast resection weights.
  • Superficial infections were more frequent without TXA (3.8% vs 0.7%, p=0.022), with no difference in overall complications or 30-day reoperation and no reported TXA-related adverse events.
Caveat

TXA use and route were chosen by surgeon preference rather than randomized, so confounding by indication cannot be excluded, and the TXA group already differed by resection weight and blood loss.

Anesthetic Management and Perioperative Predictors of Outcomes in Combined Body Contouring Procedures.

Combined BBL, liposuction, and abdominoplasty showed a low overall complication rate, with prolonged surgery and prior surgical history flagged as possible but non-significant risk factors.
Overview

A retrospective cohort of 1120 patients undergoing aesthetic surgery (2020-2025), comparing a triple-procedure group (BBL, liposuction, abdominoplasty; n=550) with a BBL-plus-liposuction group (n=570) across intraoperative variables and 30-day complications.

Key Findings
  • The overall complication rate was 0.8% (9 of 1120 patients), one-third of whom had a history of bariatric surgery.
  • The triple-procedure group had significantly higher surgical duration, crystalloid volume, aspirate removed, fat injected, and urine output (all p<0.001).
  • Prolonged surgical duration (OR 2.12) and prior surgical history (OR 1.87) were associated with complications but neither reached statistical significance, while the multivariate ROC model reported an AUC of 0.94.
Caveat

With only 9 complication events, the regression is severely underpowered, making the odds ratios unstable and the reported AUC of 0.94 likely overfit to this dataset.

The Utility and Applicability of the Modified 5-Item Frailty Index in Cosmetic Surgery.

Higher modified 5-item frailty index scores were associated with stepwise increases in complications after cosmetic surgery, though the score largely reflected hypertension and diabetes rather than true frailty.
Overview

A retrospective NSQIP cohort of 10,311 patients (adult women undergoing elective cosmetic procedures, 2008-2022) stratified by mFI-5 score of 0, 1, or >1, with multivariable regression and ROC analysis assessing 30-day outcomes and predictive performance.

Key Findings
  • Complication rates rose stepwise with frailty: 3%, 6%, and 12% for mFI-5 scores of 0, 1, and >1, respectively (p<0.001).
  • An mFI-5 score >1 independently predicted higher overall and surgical complications, readmission, and unplanned reoperation.
  • Elevated scores were driven almost entirely by hypertension (present in 87% of mFI-5=1 and 99% of mFI-5>1) and diabetes, with other frailty components uncommon.
  • The composite mFI-5 showed slightly superior discrimination and precision-recall performance compared with models built on individual comorbidities.
Caveat

Only 1% of patients had an mFI-5 >1 and the score chiefly captured hypertension and diabetes, so it likely reflects comorbidity burden rather than physiologic frailty in this population.

GLP-1 Receptor Agonists in Aesthetic Surgery: A Narrative Review on Perioperative Safety, Sarcopenic Morphologies, and Adapted Body Contouring Strategies.

GLP-1 receptor agonist use raises concern for higher wound complications and retained gastric contents in body contouring patients, alongside lean-mass loss that can affect tissue quality.
Overview

A targeted narrative review of perioperative safety, body-composition, and body contouring literature relevant to GLP-1 receptor agonist users, integrating massive-weight-loss contouring principles into a surgeon-facing perioperative framework.

Key Findings
  • Aesthetic and body contouring cohorts signaled higher wound complications, including wound dehiscence in semaglutide users of 5.19% vs 2.78% in matched controls.
  • Some GLP-1 RA users showed retained gastric contents despite standard preoperative fasting, supporting individualized risk and symptom screening.
  • GLP-1-associated weight loss may coincide with clinically relevant lean-mass reductions that influence tissue quality and contouring strategy.
Caveat

As a narrative review without a systematic search or quantitative pooling, the conclusions rest on heterogeneous, largely non-aesthetic data and are vulnerable to selection and citation bias.

Permanent Complications After Dermal Fillers: Risks, Prevention, and Management Strategies.

Permanent filler complications, though rare, include blindness, stroke, and tissue necrosis, and are driven mainly by injection site, technique, and filler permanence rather than volume.
Overview

A PRISMA-guided systematic review of PubMed (2000-2024) capturing English-language reports of irreversible dermal-filler complications persisting beyond 12 months, synthesizing prevention and management principles.

Key Findings
  • The most severe irreversible outcomes were blindness, stroke, chronic granulomatous inflammation, and tissue necrosis.
  • Irreversible injury was determined principally by anatomic injection site, technique, and filler permanence rather than injected volume alone.
  • Hyaluronic acid fillers were favored for their reversibility, whereas permanent fillers carried greater long-term complication risk.
Caveat

A synthesis of case reports and small series of rare events cannot establish true incidence or causation and is subject to substantial reporting and publication bias.

Predictors of Unplanned Admission After Outpatient Rhytidectomy.

Longer anesthesia time, more concurrent procedures, obesity, and certain anesthetic agents were associated with unplanned admission after outpatient facelift.
Overview

A retrospective review of 129 patients scheduled for outpatient rhytidectomy at a tertiary center (2022-2025), comparing same-day discharge with unplanned admission across demographics, comorbidities, surgical characteristics, and anesthetic agents.

Key Findings
  • Of 129 outpatient rhytidectomy patients, 16.3% (21 patients) required unplanned admission.
  • Admission was associated with longer anesthesia duration, 574.6 vs 485.7 minutes (p=0.001), and more concurrent procedures (4.3 vs 3.3, p=0.002).
  • Obesity, higher ASA class, and hypertension were each associated with unplanned admission.
  • Dexmedetomidine and hydromorphone were associated with admission, while remifentanil was associated with same-day discharge.
Caveat

This single-center series had only 21 admission events and tested many factors without adjustment for multiple comparisons, so the individual associations are exploratory and prone to false positives.

Total Pedicle Preservation Mastopexy: Technique, Safety, and Long-term Results.

Total pedicle preservation mastopexy achieved a low complication rate and stable nipple elevation at 24 months, though roughly half the initial inframammary-fold correction relapsed.
Overview

A prospective case series of 488 women (cup A-D, grade I-II ptosis) undergoing total pedicle preservation mastopexy by a single surgeon (2012-2022), followed to 24 months for nipple position, breast density, areolar diameter, and complications.

Key Findings
  • Mean sternal notch-to-nipple distance decreased from 25.22 to 20.65 cm at 24 months (p<0.001).
  • Nipple-to-inframammary-fold distance drifted from 7.2 to 8.1 cm, a 52.9% relapse of the initial correction with 47.1% maintained.
  • The overall complication rate was 2.5% (12 events in 488 patients), with no NAC necrosis, hematoma, dehiscence, or infection.
  • Areolar diameter decreased from 64.2 to 42.0 mm, while breast density rose modestly from 7.6 to 8.8 Shore O units at 24 months.
Caveat

This is an uncontrolled, single-surgeon case series restricted to small-volume breasts with mild (grade I-II) ptosis, so the results may not generalize to larger or more ptotic breasts.

Patient-reported outcomes following chest masculinization surgery in transmasculine individuals: A prospective study.

Chest masculinization surgery was associated with large 6-month gains in BODY-Q chest satisfaction (24% to 82%) and psychological well-being (24% to 62%) in transmasculine patients.
Overview

A prospective longitudinal study of 44 transmasculine patients undergoing chest masculinization surgery at a single Paris center collected BODY-Q scores preoperatively and at 6 months. Pre-post changes and associations with surgical, morphological, and demographic covariates were examined.

Key Findings
  • Chest satisfaction increased from 24% to 82% between baseline and 6 months (P < 0.0001).
  • Psychological well-being rose from 24% to 62%, and all BODY-Q appearance and health-related quality-of-life domains improved significantly (all P < 0.0001).
  • There were no statistically significant associations between postoperative BODY-Q scores and surgical technique, BMI, or demographic variables.
  • Postoperative expectations remained stable from baseline, which the authors interpret as evidence of realistic preoperative counseling.
Caveat

The cohort was small (44 patients) with only 6-month follow-up from a single center, so null associations with technique, BMI, and demographics may reflect limited power rather than a true absence of effect.

Risk Factors and Complication Rates of Inpatient Genioplasty Procedures in the U.S. Healthcare System: A 22-Year Retrospective Multi-center Analysis.

Inpatient genioplasty carried roughly a 10% complication rate, concentrated in older patients and osseous procedures, with prolonged length of stay the most consistent correlate of complications.
Overview

A retrospective HCUP-NIS analysis of 485 inpatient genioplasty admissions (2000–2022) characterized complications by procedural approach, age, and socioeconomic markers. Univariate and multivariate logistic regression identified independent correlates of inpatient-coded complications.

Key Findings
  • Complications occurred in 10.3% overall and were higher in older versus younger patients (14.8% vs 5.8%; p = 0.002).
  • Osseous genioplasty made up 63.5% of admissions and had higher complication rates than non-osseous procedures (12.7% vs 6.2%; p = 0.04), along with longer stays and higher charges.
  • Prolonged length of stay was the most consistent independent predictor of complications across both procedural subgroups.
  • Lower-income patients had longer hospitalizations despite similar complication rates, pointing to persistent socioeconomic disparities.
Caveat

This is administrative claims data limited to inpatient admissions, so it captures only a non-representative slice of genioplasty (most is outpatient) and relies on coded complications rather than chart-confirmed events.

Sarcoma & Oncology

4 papers this week

Marjolin ulcer: A single-center experience and evaluation of staging systems.

Standard cutaneous SCC staging systems failed to stratify outcomes in Marjolin ulcer, whereas depth-of-invasion thresholds borrowed from oral cavity SCC separated metastatic risk.
Overview

A single-center retrospective review of 42 consecutive Marjolin ulcer patients (2010–2025) applied AJCC 8th edition and Brigham and Women's Hospital staging systems and analyzed clinicopathological predictors of recurrence and survival, including depth of invasion in millimeters.

Key Findings
  • At median 48-month follow-up, recurrence occurred in 26.2% and overall mortality in 21.4%.
  • AJCC classified 71% of tumors as T3 and did not discriminate recurrence or mortality (p = 0.537 and p = 0.760), and BWH staging was similarly nonsignificant.
  • Using oral cavity SCC depth thresholds, DOI ≤ 5 mm had no distant metastasis (0/23) while DOI > 10 mm showed 80% recurrence and 60% distant metastasis (log-rank p < 0.001).
  • Pathological nodal metastasis was the strongest independent predictor of recurrence-free survival (HR 5.91; p = 0.012).
Caveat

The cohort is small and single-center (42 patients), and the oral cavity depth thresholds were applied retrospectively as an exploratory framework rather than prospectively validated for Marjolin ulcer.

The Diagnostic Accuracy of Ex Vivo Confocal Laser Scanning Microscopy for Basal Cell Carcinoma: A Systematic Review and Meta-analysis.

Ex vivo confocal microscopy showed high accuracy for diagnosing basal cell carcinoma in tissue specimens but only moderate sensitivity when used for surgical margin assessment.
Overview

A systematic review and meta-analysis of 16 studies (1,387 specimens) evaluated ex vivo confocal laser scanning microscopy against conventional histopathology for BCC diagnosis and micrographic margin assessment. Pooled sensitivity and specificity were estimated with bivariate random-effects models.

Key Findings
  • For BCC diagnosis in tissue specimens, pooled sensitivity was 91.4% and specificity 91.1%.
  • For margin assessment, pooled sensitivity was 79.5% with specificity of 92.2%, indicating high specificity but moderate sensitivity.
  • Mean confocal acquisition time was 7.0 minutes (95% CI 5.3–9.4), supporting its use when rapid diagnosis is desired.
Caveat

Pooled estimates carried wide confidence intervals (notably specificity for tissue diagnosis), reflecting heterogeneity across the 16 included studies in technique and reference handling.

Isolated Hematogenous Dissemination in Malignant Melanoma: Investigation of Potential Risk Factors.

Male sex and head and neck primary location were independently associated with isolated hematogenous melanoma metastasis despite negative sentinel nodes.
Overview

A retrospective analysis of 815 melanoma patients who underwent surgery and sentinel lymph node biopsy (2008–2024) compared those with isolated hematogenous metastasis against the remaining cohort across age, sex, location, subtype, Breslow thickness, ulceration, and regression.

Key Findings
  • Male sex remained an independent risk factor for isolated hematogenous metastasis (OR 2.93, 95% CI 1.08–7.95; P = 0.034).
  • Head and neck primary location was also independent (OR 5.30, 95% CI 1.08–26.10; P = 0.040).
  • Breslow thickness and ulceration were significant on univariate testing but lost significance in the multivariate model.
  • Tumor regression was entirely absent in the hematogenous metastasis group, which the authors link to possible host immune failure.
Caveat

The number of isolated hematogenous events was small relative to the cohort, producing very wide confidence intervals (the head and neck OR spans roughly 1–26) and likely explaining the loss of significance for Breslow thickness.

A Novel Single Stage Reconstruction of Midline Nasal Dorsum Skin Defects Using an Auricular Composite Graft.

A single auricular chondrocutaneous composite graft achieved complete survival and stable contour for a midline nasal dorsum defect after basal cell carcinoma excision in one patient.
Overview

A single-patient case report (Level of Evidence V) describes deliberate use of an auricular composite graft for midline nasal dorsum skin reconstruction following BCC excision, with preservation of the underlying cartilaginous framework.

Key Findings
  • The graft showed complete survival with no partial or total necrosis.
  • At 6 months the reconstruction had stable contour with satisfactory color and texture match and no graft contraction or secondary deformity.
  • Structural support of the dorsum and internal nasal valve plus preserved airway patency were achieved without additional cutaneous incisions.
Caveat

This is a single selected case with 6-month follow-up and no comparison group, so it cannot establish how the technique performs against flap-based reconstruction or across varied defect types.

Artificial Intelligence in Surgery

7 papers this week

The Role of ChatGPT in Reducing Preoperative Anxiety in Patients Planning to Undergo Rhinoplasty.

Both a standard written information document and a ChatGPT conversation reduced preoperative anxiety before rhinoplasty, with ChatGPT producing the larger reduction.
Overview

A single-blind randomized controlled trial of 134 patients planning rhinoplasty compared a society-issued information document (n = 66) with ChatGPT-3.5 interaction (n = 68). State-Trait Anxiety Inventory scores were measured before and after the intervention.

Key Findings
  • Baseline state anxiety showed no significant difference between groups (medians 36 vs 39; p = 0.573).
  • Both groups had significant post-intervention reductions in state anxiety, to medians of 31 (control) and 28 (ChatGPT) (both p < 0.001).
  • The median anxiety reduction was greater with ChatGPT (-6.0 vs -4; p = 0.035).
Caveat

The trial used the generic ChatGPT-3.5 at a single center with self-reported anxiety measured only immediately after the intervention, so durability and generalizability to current or specialized models are untested.

AI-based burn image assessment: Reliability and clinical error patterns of multimodal large language models in a repeated-inference study.

Multimodal large language models assessing burn photographs gave unstable, often inconsistent results across repeated runs, and no model combined high accuracy with high reliability.
Overview

A repeated-inference evaluation of four multimodal large language models on 50 clinical burn photographs (GPT-5.4 Pro, Grok 4.1, Gemini 3.1 Pro, Claude Opus 4.6) ran five independent inferences per model to assess burn depth classification and ordinal TBSA estimation.

Key Findings
  • Burn depth accuracy ranged from 34.0% to 76.4% and TBSA accuracy from 32.8% to 68.4% across models.
  • Inter-run reliability (Fleiss' κ) spanned slight (0.171) to almost perfect (0.916), and no model combined high accuracy and high reliability.
  • All models showed overestimation of burn depth, including assigning fourth-degree burns despite none being present in the dataset.
  • Agreement between numeric and text-based classifications was 99.6–100%, indicating format-invariant but systematically biased outputs.
Caveat

The evaluation used only 50 photographs against label-based reference standards, so the findings describe model consistency and bias more than validated clinical diagnostic accuracy, and results are tied to specific model versions.

Training AI Models for Aesthetic Facial Evaluation: Focused Review and Framework to Mitigate Homogenizing Bias.

Reviews how AI models for facial attractiveness prediction and outcome simulation may homogenize aesthetics and misjudge underrepresented populations, and proposes a six-pillar framework to reduce bias across the development lifecycle.
Overview

A focused review of bias in AI systems used for facial attractiveness prediction and surgical outcome simulation, examining how bias enters at each stage of model development and synthesizing existing mitigation strategies into a unified framework.

Key Findings
  • Benchmark datasets including SCUT-FBP and the Chicago Face Database underrepresent older adults, non-White, and ethnically diverse populations, limiting model accuracy for these groups.
  • Current training pipelines lack fairness-aware techniques, and evaluation typically reports overall accuracy rather than demographic-stratified performance.
  • The authors propose a six-pillar framework spanning diverse data collection with synthetic augmentation, fairness-aware training, complementary fairness metrics, explainable AI, stakeholder engagement, and continuous monitoring.
Caveat

This is a conceptual review and proposed framework; the six-pillar approach has not been empirically validated or tested against clinical outcomes.

Variation in standards for reporting artificial intelligence research using burn image datasets raises ethical questions: A scoping review.

A scoping review finds inconsistent reporting and frequent ethical omissions, such as unavailable code and data and missing consent statements, across AI studies using burn image datasets.
Overview

A scoping review of 75 studies (selected from 1562 identified across PubMed, arXiv, and IEEE Xplore) assessing reporting standards and ethical practices in computer-vision research that uses burn image datasets.

Key Findings
  • Reporting standards varied widely across studies, with unavailable code and data among the most common shortcomings.
  • Many studies omitted statements about consent and ethical review, raising questions about dataset provenance.
  • Dataset descriptions were frequently sparse, prompting the authors to propose a preliminary reporting checklist tailored to burn image datasets used in AI research.
Caveat

A scoping review characterizes reporting practice rather than model accuracy, and the proposed checklist is preliminary and has not been validated.

An Evaluation of Breast Augmentation: Accuracy, Utility, and Accessibility of Knowledge for Patient Education and Consultation with Artificial Intelligence.

ChatGPT-4.5 produced higher-quality answers than Google Gemini to common breast augmentation questions when scored by blinded board-certified surgeons.
Overview

A blinded comparison across 12 questions in which 10 EBOPRAS-certified plastic surgeons rated answers from ChatGPT-4.5 and Google Gemini to the most frequently asked breast augmentation questions using the Global Quality Score.

Key Findings
  • ChatGPT-4.5 answers received a higher mean Global Quality Score than Gemini (3.867 vs 2.842).
  • The advantage for ChatGPT-4.5 was statistically significant (p=0.003, Wilcoxon signed-rank test).
  • Both platforms scored in the mid-range of the 5-point GQS scale, with neither reaching the top quality tier.
Caveat

Only 12 questions were assessed at a single time point using one subjective quality scale, and chatbot outputs change as the underlying models are updated.

An AI-driven framework for diabetic foot ulcer classification, segmentation, and depth estimation.

Presents a deep-learning framework that classifies, segments, and estimates the relative depth of diabetic foot ulcers from single photographs, with the authors reporting strong performance.
Overview

A deep-learning framework study integrating EfficientNet-B0 classification, U-Net segmentation, MiDaS-based monocular depth estimation, and explainability tools (Grad-CAM and LIME) for automated diabetic foot ulcer assessment from single RGB images.

Key Findings
  • An EfficientNet-B0 classifier distinguished ulcerated from healthy skin with strong reported accuracy.
  • A U-Net with an EfficientNet-B0 encoder delineated ulcer boundaries, enabling quantitative area and width measurement.
  • MiDaS-based monocular estimation generated relative pseudo-depth maps from single RGB images, feeding an automated clinician-facing reporting module.
Caveat

The abstract reports no quantitative accuracy or segmentation metrics, the depth output is relative rather than absolute, and the authors note that prospective clinical validation is still required.

Multitask Artificial Intelligence-Based Electrocardiogram Tool for Preoperative Cardiac Testing in Noncardiac Surgery: Retrospective Cohort Study of Health Care Utilization and Costs.

In noncardiac surgery patients, an AI-ECG tool flagged most as low-risk, and those patients had very low 30-day event rates whether or not advanced cardiac testing was performed.
Overview

A retrospective cohort of 41,218 patients (46,135 ECG-surgery pairs) undergoing noncardiac surgery, evaluating whether a multitask AI-ECG could identify low-risk candidates and curb low-yield preoperative cardiovascular testing; the primary endpoint was a 30-day composite of all-cause mortality and unplanned PCI.

Key Findings
  • The AI-ECG classified 92.3% of cases as low-risk, with a 30-day composite event rate of 0.2% versus 2.9% in high-risk cases.
  • In low-risk cases, event rates stayed 0.2–0.4% regardless of whether advanced testing was performed, while only 16.3% of all tests returned positive findings.
  • High-risk classification was associated with consistently higher event rates across ESC surgical risk and Revised Cardiac Risk Index strata.
Caveat

This was a retrospective single-center analysis, so it cannot prove that withholding testing in AI-flagged low-risk patients is safe; prospective and economic validation is still needed.

Translational & Hallmark Medicine

10 papers this week

A translational approach to airway reconstruction leveraging decellularized meniscus and cartilage progenitor cells.

In a rabbit model, tissue-engineered grafts made from decellularized porcine meniscus seeded with ear cartilage progenitor cells outperformed autologous costal cartilage for laryngotracheal reconstruction.
Overview

A preclinical study in 38 rabbits evaluating a decellularized porcine meniscus scaffold (MEND) recellularized with ear-derived cartilage progenitor cells against autologous costal cartilage, the standard of care, in a laryngotracheal reconstruction model.

Key Findings
  • The MEND scaffold was fully recellularized within 3 days and reached implant-ready maturation after 3 weeks of chondrogenic differentiation.
  • At 3 months, grafts showed airway expansion, re-epithelialization, and neocartilage integration, outperforming autologous costal cartilage on all outcomes.
  • No adverse events such as extrusion, granulation, infection, or calcification occurred in any of the 38 rabbits.
Caveat

These results come from a rabbit model only; the approach has not been tested in humans, and translation to pediatric airway reconstruction remains unproven.

Neutrophils and neutrophil extracellular traps in ischaemia-reperfusion injury: pathophysiological roles and therapeutic potential.

Reviews how neutrophils and neutrophil extracellular traps drive ischaemia-reperfusion injury across multiple organs and surveys emerging NET-targeted biomarkers and therapies.
Overview

A narrative review dissecting neutrophil- and NET-mediated mechanisms of ischaemia-reperfusion injury across the heart, brain, kidney, liver, and transplanted organs, with emphasis on endothelial crosstalk, immunothrombosis, and metabolic regulation.

Key Findings
  • Activated neutrophils release damage-associated molecular patterns and form neutrophil extracellular traps that amplify inflammation, promote coagulation, and impair tissue repair.
  • NET-associated biomarkers, including cell-free DNA and myeloperoxidase-DNA complexes, are emerging for diagnosis and prognosis of ischaemia-reperfusion injury.
  • Candidate therapies target neutrophil recruitment, immune metabolism, and NET clearance, though substantial translational challenges remain.
Caveat

This is a narrative rather than systematic review, and the therapeutic strategies discussed are largely preclinical and not yet validated in humans.

PRDX4-enriched exosomes from adipose stem cells enhance diabetic wound repair through angiogenic activation.

In diabetic mice, adipose-derived stem cell exosomes carrying PRDX4 improved wound healing by reducing oxidative stress and restoring angiogenesis.
Overview

A preclinical mouse and cell study investigating whether adipose-derived stem cell exosomes promote diabetic wound healing, using high-throughput sequencing, endothelial progenitor cell assays, and a diabetic ulceration mouse model.

Key Findings
  • ADSC-derived exosomes enhanced diabetic wound healing by inhibiting ROS deposition and restoring angiogenic function under high-glucose conditions.
  • Sequencing identified PRDX4 upregulation, and PRDX4 knockdown abolished the exosomes' protective effect.
  • PRDX4 overexpression rescued high-glucose-induced endothelial progenitor cell dysfunction and augmented the therapeutic effect of the exosomes.
Caveat

Findings are limited to in-vitro assays and a mouse model with no clinical data, so applicability to human diabetic wounds remains unestablished.

Therapeutic Potential of Bovine Colostrum-Derived Exosomes for Ischemia-Reperfusion Injury in Skin Flaps: A Rat Model Study.

In a rat flap model, subcutaneous bovine colostrum-derived exosomes raised skin-flap survival from roughly 52% to 71% and increased microvessel density, suggesting they may mitigate ischemia-reperfusion injury.
Overview

A randomized controlled animal study of 24 Sprague-Dawley rats compared bovine colostrum-derived extracellular vesicles against PBS control and sham in a superficial inferior epigastric artery flap subjected to 8 hours of ischemia, testing flap survival, perfusion, and inflammatory markers on day 7.

Key Findings
  • Exosome treatment improved flap survival to 70.5% versus 51.8% in controls and enhanced laser Doppler perfusion (70.9% versus 58.9%).
  • Microvessel density more than doubled with treatment at 149.0 versus 71.9 vessels/mm², alongside suppressed pro-inflammatory cytokine expression.
  • Exosomes promoted M2 macrophage polarization, reflected in a significantly lower CD86/CD206 ratio.
Caveat

This is a small proof-of-concept study in 24 rats with day-7 endpoints only, so durability and applicability to human flaps remain unestablished.

Bulk RNA sequencing identifies biomarkers for mitochondrial and programmed cell death in keloids.

Bulk RNA sequencing of keloid tissue nominates UQCRC1, PRDX4, and PDK2 as candidate biomarkers linking mitochondrial function and programmed cell death.
Overview

An exploratory bioinformatic study of 24 samples (12 keloid versus 12 control) used differential expression, weighted co-expression network analysis, and two machine-learning approaches to screen for mitochondria- and cell-death-related keloid biomarkers.

Key Findings
  • Three biomarkers, UQCRC1, PRDX4, and PDK2, were identified, all involved in oxidative phosphorylation and ribosome function.
  • Immune-cell deconvolution showed six differentially infiltrated immune populations, including central memory CD8+ T cells.
  • Molecular docking found bisphenol A bound the biomarkers strongly, though its multisystem toxicity restricts it to a mechanistic structural probe rather than a therapeutic candidate.
Caveat

All findings rest on bioinformatic analysis of 24 samples without any in vitro, in vivo, or external-cohort validation, so the biomarkers remain hypothetical.

Piezo1/2 in fibrosis: Cell-type-specific roles, organ-specific pathogenesis, and therapeutic implications.

This review argues that Piezo1/2 mechanosensitive channels play context-dependent, cell-type-specific roles in fibrosis, which may reconcile conflicting reports of both pro- and anti-fibrotic effects.
Overview

A narrative review synthesizes evidence on Piezo1/2 mechanosensitive channels in organ fibrosis, spanning association studies through genetic interventions, and proposes a framework to resolve contradictory findings.

Key Findings
  • Reported Piezo effects span both pro-fibrotic and anti-fibrotic directions, which the authors attribute to genuine context dependence rather than biological noise.
  • Discrepancies are traced to differences in experimental models and methodological pitfalls such as in vitro stiffness models, off-target drug effects, and genetic-model caveats.
  • The authors offer a cell- and context-resolved framework to guide future anti-fibrotic targeting of Piezo channels.
Caveat

As a narrative review without systematic search or quantitative synthesis, its conclusions are interpretive and subject to selection bias.

FOXM1 modulates keloid fibroblast proliferation and migration via the BMP4/Smad1/5/8 axis.

FOXM1 represses BMP4 transcription and thereby promotes keloid fibroblast proliferation and migration, defining a FOXM1-BMP4-Smad1/5/8 regulatory axis.
Overview

An integrated bioinformatic and in vitro study analyzed dataset GSE145725 and used luciferase assays and functional rescue experiments to define how FOXM1 regulates BMP4/Smad1/5/8 signaling in keloid fibroblasts.

Key Findings
  • BMP4 emerged as a central hub gene, and luciferase assays confirmed that FOXM1 directly binds the BMP4 promoter to repress its transcription.
  • BMP4 overexpression inhibited fibroblast proliferation, migration, and ECM synthesis by activating Smad1/5/8 phosphorylation.
  • FOXM1 overexpression abrogated these BMP4 effects via reduced Smad1/5/8 phosphorylation, confirmed by rescue experiments.
Caveat

Evidence is limited to bioinformatics and in vitro fibroblast assays, with no in vivo or clinical validation of FOXM1 as a therapeutic target.

Cdc42-Modified BMSC-Derived exosomes promote acellular nerve allografts to bridge sciatic nerve defects.

Loading acellular nerve allografts with Cdc42-modified BMSC exosomes improved axonal regeneration and functional recovery in a rat sciatic nerve defect model.
Overview

An in vitro and rat in vivo study combined Cdc42-overexpressing BMSC-derived exosomes with an acellular nerve allograft and evaluated Schwann-cell responses, sciatic functional index, muscle weight, and histology in a sciatic nerve defect.

Key Findings
  • In vitro, Cdc42-modified exosomes enhanced Schwann cell proliferation, migration, and neurotrophic factor secretion (BDNF, NGF, CNTF).
  • In vivo, the combination graft improved functional recovery, with higher sciatic functional index scores and greater muscle weight.
  • Histology showed enhanced regeneration with thicker myelin sheaths and larger axon diameters.
Caveat

Findings come from in vitro work and a rat model without reported sample sizes or long-term functional endpoints, limiting translational inference.

PLLA Microspheres Regulate Adipocyte Dedifferentiation via Lactate: A Novel Strategy for Fat Graft Survival Enhancement.

PLLA degrades into lactate that drives adipocyte dedifferentiation, and co-transplanting PLLA with fat improved graft volume retention and neovascularization in mice.
Overview

An in vitro and murine co-transplantation study treated mature adipocytes with lactate or PLLA in ceiling culture and grafted PLLA with adipose tissue, assessing dedifferentiation mechanisms and graft survival at 7, 30, and 90 days.

Key Findings
  • PLLA-derived lactate drove adipocyte dedifferentiation at low-to-moderate concentrations, an effect abolished by monocarboxylate transporter inhibition.
  • Lactate-induced dedifferentiated adipocytes showed enhanced angiogenic potential.
  • Co-transplantation significantly improved volume retention and neovascularization, with only transient inflammation and no chronic fibrosis.
Caveat

Graft outcomes are demonstrated only in a mouse model, so optimal PLLA dosing and relevance to human fat grafting remain untested.

Botulinum Toxin Type A Alleviates Hypertrophic Scar Formation in a Rabbit Ear Model by Inhibiting the TGF-β1/Smad Pathway.

In a rabbit ear model, botulinum toxin type A reduced hypertrophic scar height and collagen deposition by suppressing TGF-β1/Smad signaling.
Overview

A controlled animal study of 16 New Zealand rabbits compared botulinum toxin type A, decorin, their combination, and saline in an auricular hypertrophic scar model, measuring scar height, collagen, and TGF-β1/Smad pathway proteins at weeks 4 and 8.

Key Findings
  • All treatment groups showed lower scar height, collagen deposition, and TGF-β1 expression than controls at weeks 4 and 8.
  • Botulinum toxin and/or decorin suppressed Smad2/3 phosphorylation, inhibited MMP2 activity, and reduced α-SMA and collagen I expression.
Caveat

The study uses a small 16-rabbit ear model and does not statistically establish whether botulinum toxin adds benefit beyond decorin, limiting clinical extrapolation.

Cases

4 papers this week

Entirely Robotic-assisted Microsurgical Anastomoses in Autologous Breast Reconstruction.

Arkudas A, Horch RE, Kümmerl L·Plast Reconstr Surg Glob Open Reconstruction & Microsurgery

A single-patient case report describes a 39-year-old woman undergoing muscle-sparing TRAM flap breast reconstruction in which both arterial and venous anastomoses were performed with the da Vinci Xi robot after preliminary instrument and technique optimization.

Staged Flap Reconstruction of Massive Abdominal Loss of Domain and Sacral Pressure Injury to Restore Quality of Life: A Case Report.

Jensen K et al.·Microsurgery Reconstruction & Microsurgery

A single-patient case report describing a strategically staged reconstruction in a 34-year-old man with a 32 × 25 cm ventral abdominal wall defect with loss of domain and a persistent stage IV sacral ulcer after gastric bypass complications, testing whether prioritizing trunk stability before sacral repair improves function.

Negative Angiography Does Not Exclude Ulnar Artery Aneurysm in Hypothenar Hammer Syndrome.

McCreery C et al.·J Hand Surg Glob Online Hand

A single-patient case report of a 54-year-old man with episodic pain and discoloration of the left middle, ring, and little digits and frequent bicycle use, in whom noninvasive imaging and diagnostic angiography were nondiagnostic for an ulnar artery aneurysm.

Hemi-Hamate Arthroplasty in Delayed Proximal Interphalangeal Joint Fracture-Dislocations: Technical Considerations and Early Outcomes From a Case Series.

Vu HQ et al.·J Hand Surg Glob Online Hand

A retrospective case series of 4 patients treated between June and December 2025 with hemi-hamate autograft reconstruction for unstable dorsal PIP joint fracture-dislocations involving more than 50% loss of the volar articular surface, assessing early clinical and radiographic outcomes.

Closing Notes

The comparative work this week converges on an unfashionable conclusion: much of what we add to an operation may not earn its place. The interim external vacuum expansion trial and the pooled hyperbaric oxygen data both failed to show the benefit their rationale predicts, while head-to-head comparisons of regional block timing and reconstruction type returned outcomes that were, for practical purposes, indistinguishable. Read together, these point less toward innovation than toward permission to simplify. The caveat is design: several of these comparisons are retrospective or single-centre, and an interim analysis is not a verdict, so equivalence here should be held loosely rather than banked.

A second thread runs through the diagnostic studies. Several tools detect well but confirm poorly. Burn sepsis criteria flag most cases at the cost of many false positives, confocal microscopy diagnoses basal cell carcinoma reliably yet falters at the margin, the flow coupler's alarms are frequently technical, and a LRINEC above six carried no prognostic weight. Even repeated-inference testing of language models on burn photographs returned assessments that shifted from run to run. The point is an old one worth restating: a test that finds disease is not yet a test that settles the operation.

Until next Sunday,

Marius DryschMarius Drysch, MD, MHBA