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Plastic Surgery Weekly

The week in peer-reviewed plastic surgery research
Issue 7Sun, Jun 28, 2026238 screened · 65 selected
This Week in Brief

Reconstruction leads with a Plast Reconstr Surg meta-analysis of botulinum toxin type A given around wound closure, which pooled trials and cohorts to find improved Vancouver Scar Scale scores (MD −1.07, 95% CI −1.59 to −0.56), narrower scars, and higher patient satisfaction (RR 1.83), with only transient adverse effects. J Plast Reconstr Aesthet Surg supplies the other four picks. A 20,415-patient IPTW NSQIP cohort shows immediate free-flap breast reconstruction carries higher 30-day readmission than delayed (OR 1.35; 6.4% vs 5.1%), transfusion (OR 1.43), and return to the operating room (OR 1.27), without more major systemic events. A meta-analysis of free toe pulp flaps for fingertip reconstruction reports 99.8% pooled survival across 1,300 flaps, with cold intolerance persisting in 26.3%. A comparative study finds preoperative ultrasound marking before posterior spinal accessory–to–suprascapular nerve transfer cut total operative time to 110.4 from 132.6 minutes and wide exploratory dissection to 15% from 60%. The fourth reconstructs stage IV oral cancer defects with two or more free flaps, reporting 75% one-year and 43.3% five-year survival, only 2 complete flap losses in 53 patients, and positive margins as the dominant survival determinant (HR 0.14).

Across the Field
Reconstruction & Microsurgery.

The NEAPE randomized non-inferiority trial in BJS Open found an acellular porcine collagen implant did not prove non-inferior to a gluteus maximus flap for perineal closure after extended abdominoperineal excision, with function trending toward the flap. A Plast Reconstr Surg Glob Open meta-analysis put pooled DIEP flap survival at roughly 96% across head and neck, limb, vaginal, and trunk reconstruction with low donor-site morbidity. Cleft work clusters here: a nasolabial muscle reconstruction lengthened the deficient prolabium from 9.8 to 13.5 mm in secondary bilateral cleft lip, and a primary rotational composite flap achieved nostril-height symmetry in 71% and lip-width symmetry in 78% at five years. A Radiology deep-learning tool that suppresses venous signal on MR lymphangiography improved reflux detection and cut reading time, and a systematic review of quantitative indocyanine green angiography found prolonged time-to-peak and delayed washout tracked with venous congestion and flap necrosis.

Hand & Peripheral Nerve.

Tobacco and especially concurrent cannabis-plus-tobacco use were linked to more surgical site infection and wound disruption after open carpal tunnel release in a nationwide US database study, while complex regional pain syndrome tracked only with tobacco. Cadaveric testing in J Hand Surg Am found a suture-and-headless-screw tension band biomechanically stronger than the standard K-wire and metal construct for olecranon fractures. In-office excision of type B ulnar polydactyly ran payer charges roughly one-fifth those of operating-room excision. A Plast Reconstr Surg Glob Open review of pediatric targeted muscle reinnervation reported neuroma and pain resolution in all patients and narcotic discontinuation in most across very small series, while a J Hand Surg Eur Vol cohort named baseline pain severity the strongest predictor of residual pain after three months of orthosis treatment for thumb-base osteoarthritis.

Burns & Wounds.

An interpretable machine-learning model classified diabetic-foot risk status with high accuracy (AUC ~0.92) from sixteen routine clinical features and held up in an external cohort, in Sci Rep. A J Burn Care Res analysis found unhoused burn patients readmitted within 30 days more often than housed patients (8.6% vs 5.2%), with leaving against medical advice the strongest modifiable predictor. In a burn-center series, Kerecis Omega3 fish-skin graft let roughly half of deep partial-thickness burns heal without grafting, though every full-thickness burn still needed skin grafting or further reconstruction. A randomized in vivo human model showed silicone-based gels reduced erythema, lesion area, and depth on laser-induced microlesions, and a Sci Rep mechanistic study tied keloid formation to collagen binding fibroblast CD44 and activating YAP1 to overexpress PD-L1.

Breast.

In DIEP reconstruction, Plast Reconstr Surg reported that sarcopenic overweight (low muscle mass with high BMI) carried roughly an eightfold higher complication risk, whereas low muscle mass or high BMI alone did not. The Paris Breast Center series of 157 consecutive chest wall perforator flaps for oncoplastic breast conservation recorded low complication and re-excision rates with no flap loss. A machine-learning model trained on a national breast-device registry predicted revision for device-related complications, flagging implant manufacturer, shell texture, and older age. Among microbiologically confirmed prosthesis infections, one-stage exchange carried the highest recurrence while two-stage exchange and explantation fared better, and longer operative time tracked with more mastectomy skin-flap necrosis after tissue-expander reconstruction.

Aesthetic.

A retrospective study associated preoperative antidepressant use with modest increases in infection, dehiscence, sepsis, and opioid prescribing after breast reduction, without more bleeding. An Aesthetic Plast Surg meta-analysis of labial artery anatomy found no perioral plane free of vessels, underscoring injection risk, while a controlled study from the same journal showed menstrual cycle phase did not affect blood loss in high-energy lipoabdominoplasty. Polyurethane-coated implants maintained high patient-reported satisfaction at five years alongside a new device-specific PU-PRO instrument, and a 3D modeling study ranked the neck and jawline as the regions contributing most to a youthful appearance.

Sarcoma & Oncology.

Eyelid composite tissue flaps restored full-thickness margin defects up to two-thirds of lid length with complete flap survival in every patient, in Plast Reconstr Surg Glob Open. A systematic review of Maffucci syndrome found definitions inconsistent, with only 16% of reported patients carrying a vascular-anomaly diagnosis matching a modern ISSVA label. A practice survey showed dermatologists chose ultrasound-guided one-step melanoma excision in about a quarter of scenarios, rising to roughly half when biopsy had already confirmed the diagnosis.

Artificial Intelligence in Surgery.

An MRI-based deep-learning model in Nat Commun predicted sentinel and non-sentinel axillary node status and flagged breast-cancer patients who might safely avoid axillary surgery. In JPRAS Open, large language models matched expert ratings for recognizing free-flap compromise in simulated head and neck re-exploration but diverged on management planning, which the authors say does not support independent clinical use. A retrospective modeling study found that adding clinical text and temporal laboratory data to deep-learning models improved automated surgical-site-infection detection over structured data alone and over a rule-based system. A burn-care review warned that AI tools rarely test performance across demographic subgroups, risking amplified inequities.

Translational & Hallmark Medicine.

Autologous fibroblast-containing micrografts produced greater improvement in wrinkles and skin elasticity at 12 months than a hyaluronic acid skin booster in an open-label randomized study (JPRAS Open). A cutaneous tissue-engineering roadmap in Int J Mol Sci argued that rapid, durable perfusion, not vessel density, is the decisive bottleneck for engineered skin substitutes. Two reviews temper enthusiasm for cell-free products: extracellular vesicles marketed as exosomes show regenerative potential but heterogeneous evidence and adverse events from unapproved products, while PRP behaves as a preparation-dependent bioregulatory system rather than a simple growth-factor agent.

Cases.

The free superficial circumflex iliac artery perforator (SCIP) flap closed acquired tracheoesophageal fistulas after head and neck cancer treatment in all three reported cases in Microsurgery, suggesting a feasible low-morbidity option.

Efficacy and Safety of Botulinum Toxin Type A for Pathological Scar Prevention: A Systematic Review and Meta-Analysis.

Pooled trial and cohort data suggest that botulinum toxin type A used around wound closure modestly improves scar quality and patient satisfaction without serious adverse effects.
Overview

Systematic review and meta-analysis of 19 studies (686 patients) pooling randomized and nonrandomized comparisons of botulinum toxin type A versus control for prevention of pathological scarring, with scar quality, patient satisfaction, and adverse effects as outcomes.

Key Findings
  • BoNT-A improved Vancouver Scar Scale scores (MD −1.07, 95% CI −1.59 to −0.56) and visual analog scale ratings (MD 1.18, 95% CI 0.94 to 1.42).
  • Scar width was reduced, with a mean difference of −0.21 (95% CI −0.33 to −0.09).
  • Patients treated with BoNT-A reported higher satisfaction (RR 1.83, 95% CI 1.10 to 3.07).
  • Adverse effects were minimal and transient, with no significant difference between groups.
Caveat

The included studies were small and clinically heterogeneous, mixing randomized and nonrandomized designs, so the pooled estimates may overstate the true effect.

Immediate versus delayed free-flap breast reconstruction: Higher readmission after immediate reconstruction in a 20,415-patient IPTW NSQIP cohort.

After rigorous risk adjustment, immediate free-flap breast reconstruction was associated with modestly higher 30-day readmission, transfusion, and reoperation than delayed reconstruction, but no increase in life-threatening complications.
Overview

Retrospective cohort of 20,415 women undergoing free-flap breast reconstruction in the ACS-NSQIP registry (2012–2022), comparing immediate versus delayed reconstruction for 30-day complications using inverse probability of treatment weighting.

Key Findings
  • Immediate reconstruction carried higher odds of 30-day readmission (OR 1.35, 95% CI 1.18–1.54; 6.4% vs 5.1%).
  • Perioperative transfusion was more common after immediate reconstruction (OR 1.43, 95% CI 1.28–1.59; 9.8% vs 7.5%).
  • Unplanned return to the operating room was also more frequent (OR 1.27, 95% CI 1.16–1.40; 12.2% vs 10.7%).
  • Major systemic events such as sepsis, stroke, myocardial infarction, and cardiac arrest were rare (<2%) and comparable between groups.
Caveat

As a registry-based observational study, NSQIP captures only 30-day outcomes and lacks oncologic, radiotherapy, and flap-specific detail, so residual confounding by indication cannot be excluded despite weighting.

Ultrasound versus surgical anatomical landmarks for localization of the spinal accessory and suprascapular nerves in posterior nerve transfer: A comparative clinical study.

Preoperative ultrasound marking before posterior spinal accessory–to–suprascapular nerve transfer was associated with faster nerve identification and less exploratory dissection than surface landmarks alone.
Overview

Prospective nonrandomized cohort of 40 patients undergoing posterior spinal accessory–to–suprascapular nerve transfer, alternately allocated to ultrasound-guided versus landmark-based preoperative skin marking, comparing identification times, operative time, and need for wider dissection.

Key Findings
  • Ultrasound shortened time to spinal accessory nerve identification (12.0 vs 20.1 min) and suprascapular nerve identification (58.2 vs 72.4 min).
  • Total operative time was shorter with ultrasound (110.4 vs 132.6 min).
  • Wider exploratory dissection was needed less often in the ultrasound group (15% vs 60%, p = 0.004).
  • Ultrasound mapping added a mean of 3.0 min to the workflow yet preserved the overall time benefit.
Caveat

Allocation was by alternating sequence rather than true randomization at a single center with only 40 patients, and no functional shoulder recovery outcomes were reported.

Clinical and esthetic outcomes of free toe pulp flaps for fingertip reconstruction: A systematic review and meta-analysis of flap survival.

Free toe pulp flaps for fingertip reconstruction show very high pooled survival of about 99.8% with generally favorable sensory and aesthetic outcomes, though cold intolerance remains common.
Overview

Systematic review and meta-analysis of 17 studies (1300 flaps) of free great-toe or second-toe pulp transfer for fingertip, thumb pulp, and distal digital defects, with random-effects pooling of flap survival and descriptive synthesis of functional and complication outcomes.

Key Findings
  • The pooled flap survival rate was 99.8% (95% CI 99–100%), with total loss in 9 of 1300 flaps and partial necrosis in 5.
  • Reported mean static two-point discrimination ranged from 3.7 to 13.1 mm across studies.
  • Cold intolerance was reported in 26.3% of assessed patients (42 of 160).
  • Aesthetic and patient-reported outcomes were generally satisfactory where assessed.
Caveat

The evidence rests on retrospective series with heterogeneous outcome definitions, and a single high-volume series disproportionately drives the pooled survival estimate.

Reconstruction of advanced oral cancer defects with two or more free flaps: Long-term clinical outcomes.

Reconstructing extensive stage IV oral cancer defects with two or more simultaneous free flaps was feasible with low flap loss, and achieving clear surgical margins was the strongest determinant of survival.
Overview

Retrospective review of 53 patients with stage IV oral cavity cancer who underwent wide excision, neck dissection, and reconstruction with two or more simultaneous free flaps (2013–2023), analyzing complications, recurrence, and survival.

Key Findings
  • Overall survival was 75% at 1 year, 61.2% at 2 years, and 43.3% at 5 years.
  • On multivariable analysis, a positive surgical margin was independently associated with poorer survival (HR 0.14, p = 0.033).
  • Complete flap loss occurred in only 2 of 53 patients, despite a mean operative time of 508 minutes.
  • The most common combination was a fibula osteocutaneous flap with an anterolateral thigh flap, and all patients received adjuvant chemoradiotherapy.
Caveat

This is a single-center retrospective series of 53 patients, almost entirely male, with no single-flap comparison group, limiting causal inference.

Reconstruction & Microsurgery

10 papers this week

Reconstruction of advanced oral cancer defects with two or more free flaps: Long-term clinical outcomes.

Reconstructing extensive stage IV oral cancer defects with two or more simultaneous free flaps was feasible with low flap loss, and achieving clear surgical margins was the strongest determinant of survival.
Overview

Retrospective review of 53 patients with stage IV oral cavity cancer who underwent wide excision, neck dissection, and reconstruction with two or more simultaneous free flaps (2013–2023), analyzing complications, recurrence, and survival.

Key Findings
  • Overall survival was 75% at 1 year, 61.2% at 2 years, and 43.3% at 5 years.
  • On multivariable analysis, a positive surgical margin was independently associated with poorer survival (HR 0.14, p = 0.033).
  • Complete flap loss occurred in only 2 of 53 patients, despite a mean operative time of 508 minutes.
  • The most common combination was a fibula osteocutaneous flap with an anterolateral thigh flap, and all patients received adjuvant chemoradiotherapy.
Caveat

This is a single-center retrospective series of 53 patients, almost entirely male, with no single-flap comparison group, limiting causal inference.

Efficacy and Safety of Botulinum Toxin Type A for Pathological Scar Prevention: A Systematic Review and Meta-Analysis.

Pooled trial and cohort data suggest that botulinum toxin type A used around wound closure modestly improves scar quality and patient satisfaction without serious adverse effects.
Overview

Systematic review and meta-analysis of 19 studies (686 patients) pooling randomized and nonrandomized comparisons of botulinum toxin type A versus control for prevention of pathological scarring, with scar quality, patient satisfaction, and adverse effects as outcomes.

Key Findings
  • BoNT-A improved Vancouver Scar Scale scores (MD −1.07, 95% CI −1.59 to −0.56) and visual analog scale ratings (MD 1.18, 95% CI 0.94 to 1.42).
  • Scar width was reduced, with a mean difference of −0.21 (95% CI −0.33 to −0.09).
  • Patients treated with BoNT-A reported higher satisfaction (RR 1.83, 95% CI 1.10 to 3.07).
  • Adverse effects were minimal and transient, with no significant difference between groups.
Caveat

The included studies were small and clinically heterogeneous, mixing randomized and nonrandomized designs, so the pooled estimates may overstate the true effect.

Collagen implant versus gluteus maximus flap for perineal closure after extended abdominoperineal excision: NEAPE randomized clinical trial.

In a randomized non-inferiority trial, an acellular porcine collagen implant did not prove non-inferior to a gluteus maximus flap for perineal reconstruction after extended abdominoperineal excision, with functional outcomes trending in favor of the flap.
Overview

Multicenter randomized non-inferiority trial of 83 patients undergoing extended abdominoperineal excision for rectal cancer, comparing an acellular porcine collagen implant with a unilateral gluteus maximus myocutaneous flap, with 6-month physical function on the timed-stands test as the primary outcome.

Key Findings
  • At 6 months, 71% of implant patients versus 60% of flap patients underperformed on the timed-stands test relative to age- and sex-matched norms.
  • The risk difference was −11% (one-sided 95% CI −30% to ∞), so non-inferiority of the implant was not demonstrated.
  • The direction of effect favored the flap, with results compatible with worse functional recovery in the implant group.
Caveat

With only 83 randomized patients and a functional endpoint defined against reference norms, the trial may have been underpowered, and the wide one-sided confidence interval leaves the true difference uncertain.

A Meta-analysis of Nontraditional Uses of Deep Inferior Epigastric Artery Perforator Flaps.

Beyond breast reconstruction, the DIEP flap achieved roughly 96% pooled survival across head and neck, limb, vaginal, and trunk reconstructions with low donor-site morbidity.
Overview

Systematic review of 89 studies (467 patients) evaluating deep inferior epigastric artery perforator (DIEP) flaps used for nonbreast reconstruction across head and neck, upper and lower limb, vaginal, hip and thigh, and trunk sites.

Key Findings
  • Overall pooled flap survival was 96%, with 19 total flap losses among 467 reconstructions.
  • Region-specific survival ranged from 93% (lower limb) to 98% (hip and thigh), including 97% in head and neck.
  • Donor-site complications were rare (2.78%, 13 cases), with 97.22% achieving primary closure without adverse events.
  • The largest use categories were head and neck (n = 122) and lower limb (n = 115) reconstruction.
Caveat

The synthesis pools small, heterogeneous case series across diverse anatomical sites without a comparator, so the survival estimates carry selection and reporting bias.

MR Lymphangiography for Diagnosis of Lower Extremity Lymphedema: Suppressing Venous Signal Interference Using Deep Learning.

A deep-learning tool that suppresses venous signal on MR lymphangiography improved image quality and helped readers detect more lymphatic reflux while substantially cutting reading time.
Overview

Multicenter study of 1022 individuals (6162 dynamic scans) with lower-extremity lymphedema, developing and testing LympClear, an nnU-Net–based deep-learning model for venous signal suppression on MR lymphangiography against radiologist consensus labels.

Key Findings
  • LympClear segmented venous signal with a Dice score of 0.94, and venous-suppressed images scored higher for image quality, venous suppression, and reflux visibility (all p < .001).
  • Reading time fell from 16.7 to 3.6 minutes per case with venous suppression.
  • Readers identified 14.9% more reflux regions on suppressed images, and the case-level missed-detection rate dropped from 14.7% to 6.7%.
  • Dynamic images improved contrast-agent flow visibility over static images (8.68 vs 6.85 on a 10-point scale).
Caveat

The work is largely retrospective and uses radiologist consensus rather than an independent anatomical or surgical gold standard as the reference, and improved image quality has not yet been tied to changes in patient management.

The Revision of Vertical Prolabial Deficiency in Bilateral Cleft Lip Patients: Prolabium Lengthening by Nasolabial Muscle Reconstruction.

A nasolabial muscle reconstruction technique lengthened the deficient prolabium from roughly 9.8 to 13.5 mm in secondary bilateral cleft lip patients, suggesting an alternative to volume augmentation with an Abbé flap.
Overview

A retrospective single-arm case series of 65 patients with secondary bilateral cleft lip and vertical prolabial deficiency who underwent prolabial lengthening by nasolabial muscle reconstruction, with philtral, vermilion, and lower-face measurements and a satisfaction questionnaire.

Key Findings
  • Mean philtrum length rose from 9.8 ± 2.2 mm preoperatively to 13.5 ± 1.3 mm immediately after surgery (P < 0.05).
  • The ratio of prolabial length to lower facial length improved from 0.32 ± 0.03 to 0.40 ± 0.04 postoperatively (P < 0.05).
  • Lengthening is achieved by reconstructing and lengthening the nasolabial muscle rather than transferring lip tissue, with follow-up ranging from 6 months to 3 years.
Caveat

The series has no comparison group and reports its key length gains immediately postoperatively, so relapse over time and any advantage over the Abbé flap cannot be assessed; the satisfaction tool was not validated.

Quantitative Venous Outflow Assessment in Reconstructive Flaps Using Indocyanine Green Angiography: A Systematic Review.

Quantitative indocyanine green angiography measures such as prolonged time-to-peak and delayed washout tracked with venous congestion and flap necrosis, suggesting they may flag venous compromise earlier than visual assessment.
Overview

A PRISMA-guided systematic review of 9 studies (210 patients, 164 flaps) examining how quantitative ICGA parameters have been used to assess venous outflow in free and pedicled flaps, with risk of bias rated by ROBINS-I.

Key Findings
  • Abnormal angiographic trends, including prolonged Tmax, flattened egress slopes, and delayed washout, correlated with venous congestion and postoperative necrosis.
  • Quantitative ICGA was applied across breast, head and neck, perineal, and lower extremity reconstructions using SPY, Quest, and Zeiss platforms, with metrics including ratio indices, time-to-maximum fluorescence, and inflow/outflow slopes.
  • Heterogeneity in dosing, imaging timing, software, and the definition of outflow precluded meta-analysis.
Caveat

Evidence comes from only nine small, heterogeneous nonrandomized studies with no standardized protocol or validated thresholds, so findings were synthesized descriptively and prognostic value is unconfirmed.

Cleft Palate Repair Guided by Cleft Gap: An Institutional Protocol Using Modified Asymmetric Short Limb Z-plasty (MASLZ) and Straight-line Repair.

Selecting palatoplasty technique by intraoperative cleft-gap width produced comparable fistula and velopharyngeal insufficiency rates across narrow and wide clefts.
Overview

A retrospective single-surgeon cohort of 65 patients with unilateral cleft palate (2015–2023), comparing modified asymmetric short-limb Z-plasty for V-shaped gaps ≤ 6 mm against straight-line repair with overlapping intravelar veloplasty for wider or U-shaped palates.

Key Findings
  • Fistula formation occurred in 1 of 34 MASLZ versus 5 of 31 SLR patients (p = 0.0951).
  • Secondary velopharyngeal insufficiency surgery was needed in 2 versus 6 patients (p = 0.1377), and surgical group was not an independent predictor of secondary VPI surgery on multivariable analysis.
  • Both techniques were designed to maximize levator veli palatini overlap, with technique assigned by gap measurement at the uvular neck.
Caveat

Wider and U-shaped clefts were preferentially assigned to straight-line repair, so the groups differ by baseline severity, and the small single-surgeon sample is likely underpowered to detect real differences in fistula or VPI rates.

Rotational Composite Flap Technique for Primary Incomplete Cleft Lip Nose Repair.

A vestibular composite flap of alar cartilage and skin used at primary cleft lip repair achieved nostril-height symmetry in about 71% and lip-width symmetry in 78% of children at 5 years.
Overview

A retrospective cross-sectional study of 85 patients with unilateral incomplete cleft lip operated 2016–2018, with nasal and lip symmetry rated by 3 observers on standardized frontal and basilar photographs after at least 5 years of follow-up.

Key Findings
  • Total nostril height symmetry was observed in 35 of 49 patients (71.4%).
  • Total lip width symmetry was observed in 38 of 49 patients (77.6%).
  • Surgery was performed at a median age of 3.8 months and the rotational flap required no donor-site graft, with few patients needing correction at the mixed-dentition stage.
Caveat

This single-surgeon series has no comparison technique and reports symmetry on only 49 of 85 patients using subjective observer ratings, limiting generalizability.

Palatal Fistulae: Classification, Prevention, and Algorithmic Surgical Management.

The review advances a multidimensional fistula classification and a function-focused algorithm intended to standardize planning and repair of palatal fistulae after cleft palate surgery.
Overview

A narrative review (book chapter) of the etiology, classification, prevention, and algorithmic surgical management of palatal fistulae, the most common complication after cleft palate repair.

Key Findings
  • The Pakistan Comprehensive Fistula Classification grades fistulae across four domains (location, size, velopharyngeal competence, and dehiscence), addressing gaps in size-based and Pittsburgh systems.
  • Repair is built on multilayered, tension-free closure with preserved vascularity, velopharyngeal port reconstruction, and regional flaps.
  • Symptomatic fistulae are repaired after a 6 to 9 month healing period, with adjuncts such as levator retropositioning or pharyngeal flaps when velopharyngeal dysfunction is present.
Caveat

This is an expert narrative review rather than a comparative study, so the proposed classification and algorithm are not validated against measured outcomes.

Hand & Peripheral Nerve

10 papers this week

Clinical and esthetic outcomes of free toe pulp flaps for fingertip reconstruction: A systematic review and meta-analysis of flap survival.

Free toe pulp flaps for fingertip reconstruction show very high pooled survival of about 99.8% with generally favorable sensory and aesthetic outcomes, though cold intolerance remains common.
Overview

Systematic review and meta-analysis of 17 studies (1300 flaps) of free great-toe or second-toe pulp transfer for fingertip, thumb pulp, and distal digital defects, with random-effects pooling of flap survival and descriptive synthesis of functional and complication outcomes.

Key Findings
  • The pooled flap survival rate was 99.8% (95% CI 99–100%), with total loss in 9 of 1300 flaps and partial necrosis in 5.
  • Reported mean static two-point discrimination ranged from 3.7 to 13.1 mm across studies.
  • Cold intolerance was reported in 26.3% of assessed patients (42 of 160).
  • Aesthetic and patient-reported outcomes were generally satisfactory where assessed.
Caveat

The evidence rests on retrospective series with heterogeneous outcome definitions, and a single high-volume series disproportionately drives the pooled survival estimate.

Ultrasound versus surgical anatomical landmarks for localization of the spinal accessory and suprascapular nerves in posterior nerve transfer: A comparative clinical study.

Preoperative ultrasound marking before posterior spinal accessory–to–suprascapular nerve transfer was associated with faster nerve identification and less exploratory dissection than surface landmarks alone.
Overview

Prospective nonrandomized cohort of 40 patients undergoing posterior spinal accessory–to–suprascapular nerve transfer, alternately allocated to ultrasound-guided versus landmark-based preoperative skin marking, comparing identification times, operative time, and need for wider dissection.

Key Findings
  • Ultrasound shortened time to spinal accessory nerve identification (12.0 vs 20.1 min) and suprascapular nerve identification (58.2 vs 72.4 min).
  • Total operative time was shorter with ultrasound (110.4 vs 132.6 min).
  • Wider exploratory dissection was needed less often in the ultrasound group (15% vs 60%, p = 0.004).
  • Ultrasound mapping added a mean of 3.0 min to the workflow yet preserved the overall time benefit.
Caveat

Allocation was by alternating sequence rather than true randomization at a single center with only 40 patients, and no functional shoulder recovery outcomes were reported.

Outcomes Following Targeted Muscle Reinnervation in Pediatric Amputations: A Systematic Review.

Across small pediatric series, targeted muscle reinnervation was associated with neuroma and pain resolution in all patients and with discontinuation of narcotics in most, though the evidence base is very limited.
Overview

A PRISMA-guided systematic review of 6 retrospective studies (16 patients) evaluating immediate or delayed TMR in amputees younger than 18, with outcomes including neuroma and pain resolution, NRS, PROMIS, and prosthetic and narcotic use.

Key Findings
  • Neuroma and overall pain resolution were reported in 100% of patients, with mean NRS scores of 2.0 for residual limb pain and 3.7 for phantom limb pain.
  • Of 11 patients using narcotics, 10 discontinued by final follow-up, and 9 of 12 proceeded with prosthetic use.
  • Complications occurred in 12.5% (2 of 16) of patients and resolved after revision, with PROMIS scores comparable to adult outcomes.
Caveat

Only 16 patients pooled from six retrospective studies with no control group and heterogeneous outcome measures make the estimates imprecise and at high risk of bias.

Factors associated with pain after non-surgical treatment for trapeziometacarpal joint osteoarthritis.

After 3 months of orthosis-based non-surgical treatment for thumb-base osteoarthritis, baseline pain severity was the strongest predictor of remaining pain, along with outcome expectations and grip-strength gains.
Overview

A secondary analysis of a randomized trial of 113 patients with Eaton-Glickel stage ≥2 trapeziometacarpal osteoarthritis from 18 Dutch clinics, using linear regression to identify factors associated with the MHQ pain subscale at 3 months.

Key Findings
  • Baseline MHQ pain score had the strongest independent association with better pain at 3 months.
  • Higher baseline outcome expectations and improvement in grip strength were also associated with better pain outcomes.
  • Among the other tested candidates, including psychological factors, therapy adherence, perceived attention, and treatment frequency, none were identified as independent associations with 3-month pain.
Caveat

Because this is an observational secondary analysis, the identified factors are correlational and do not establish that changing baseline expectations or grip strength would reduce pain.

Algorithm for Surgical Management of Symptomatic Hand and Digital Neuromas.

A scoping review proposes an anatomy-driven algorithm that prioritizes reconstruction with a distal nerve target when one is available for symptomatic hand and digital neuromas.
Overview

A scoping review of surgical treatments for symptomatic neuromas distal to the wrist, integrated with established peripheral nerve surgery principles to build a pragmatic operative decision algorithm.

Key Findings
  • The available literature is predominantly retrospective and heterogeneous in neuroma types, techniques, and outcome reporting, limiting direct comparisons between approaches.
  • Across studies, many patients reported meaningful pain improvement after surgical treatment.
  • The algorithm prioritizes reconstruction when a distal target exists (primary repair when feasible, interposition autograft or allograft for gaps), and otherwise applies location-specific nerve-end management and biologic targeting.
Caveat

The synthesis draws on heterogeneous, mostly retrospective studies without head-to-head comparisons, so the algorithm reflects expert integration rather than comparative outcome evidence.

Clinic-based Treatment of Type B Ulnar Polydactyly Saves Costs Compared With Treatment in the Operating Room.

In-office excision of type B ulnar polydactyly costs substantially less than operating-room excision, with payer charges roughly one-fifth those of the OR.
Overview

A retrospective review of 114 patients treated from 2019 to 2023 compared in-office (n=64) versus operating-room (n=50) excision of type B ulnar polydactyly, analyzing charges to payers and underlying health-system costs.

Key Findings
  • Total charges to the payer were far lower for in-office than OR excision ($2130 versus $10,731; P<0.001).
  • Average cost per digit removed was also lower in the office setting ($1218 versus $5937; P<0.001).
  • Health-system costs were lower in-office both overall ($845 vs $2349) and per digit removed ($472 versus $1272); all P<0.001.
Caveat

This is a retrospective single-institution cost analysis with no clinical or recurrence outcomes, and assignment to office versus OR was not randomized, so the groups may differ in ways that influence both cost and suitability.

Surgery for unmeasurable neuropathy to alleviate non-specific upper extremity pain: round table discussion.

Expert opinion remains divided on whether to offer nerve surgery for upper-extremity neuropathies such as pronator, radial tunnel, lacertus, and neurogenic thoracic outlet syndrome when no objective test confirms the diagnosis.
Overview

A round-table discussion among five expert hand surgeons examining the clinical and ethical uncertainties of offering surgery for unmeasurable upper-extremity neuropathies that present as non-specific pain.

Key Findings
  • The panel centers on the absence of objective reference tests to confirm diagnoses including pronator, supinator/radial tunnel, lacertus, and neurogenic thoracic outlet syndrome.
  • Discussion addresses the ethical implications of surgical placebo effects and how to judge treatment effectiveness when no measurable disease is present.
  • Surgeons diverged in risk tolerance and concern for overtreatment, with shared decision-making proposed as the route to proceeding in the absence of confirmable pathology.
Caveat

This is an expert opinion piece rather than original data; it conveys the views of five surgeons and offers no comparative outcome evidence to resolve the debate.

Biomechanical Comparison of Metal Versus Suture and Screw Tension Band Technique for Olecranon Fractures.

A suture-and-headless-screw tension band for olecranon fractures was biomechanically stronger than the standard K-wire and metal tension band in cadaver arms.
Overview

A biomechanical study of 10 matched-pair cadaver arms compared a two-suture plus 4.5-mm headless compression screw tension band against the standard 1.6-mm K-wire and 18-gauge metal construct after transverse olecranon osteotomy, tested by cyclic loading to 300 N and load-to-failure.

Key Findings
  • During cyclic loading, 2 of 5 metal constructs failed whereas none of the suture/screw constructs did.
  • On load-to-failure, the suture/screw construct was on average 219 N stronger than the K-wire and metal tension band.
Caveat

This is a cadaveric biomechanical model with only five arms per group and no biological healing, so it cannot speak to clinical union, hardware irritation, or reoperation rates.

The Role of Traditional Limb Salvage and Finger Replantation in the Era of Bionic Reconstruction.

This review reaffirms replantation as first-line for thumb, multiple-digit, and select distal amputations, while positioning elective amputation with bionic reconstruction as an option when replanted-limb function and sensibility remain poor.
Overview

A narrative review of the indications for traditional limb salvage and finger replantation relative to elective amputation with bionic reconstruction.

Key Findings
  • Replantation is recommended for thumb, multiple-digit, and single-digit amputations distal to the FDS insertion, given superior function compared with revision amputation.
  • Replantation of distal forearm amputations is favored over prostheses, offering better postoperative function and a high likelihood of return to work.
  • Elective amputation with bionic reconstruction is presented as a viable alternative when hand function and sensibility remain poor after major upper-limb replantation.
Caveat

As a narrative review reflecting expert synthesis rather than a systematic appraisal, its recommendations are not weighted by study quality or pooled outcomes.

Impact of cannabis use and tobacco smoking on outcomes of open carpal tunnel release surgery: a nationwide study in the United States.

In a large database study, tobacco and especially concurrent cannabis-plus-tobacco use were associated with more surgical site infection and wound disruption after open carpal tunnel release, while complex regional pain syndrome tracked only with tobacco.
Overview

A retrospective cohort of over 339,000 patients in the PearlDiver database (2010–2022) compared cannabis-only, tobacco-only, concurrent, and matched non-user groups for complications after open carpal tunnel release.

Key Findings
  • Surgical site infection was more common in concurrent, cannabis-only, and tobacco-only users than non-users at both 6 weeks and 3 months.
  • Wound disruption was elevated in concurrent and tobacco-only users but not cannabis-only users.
  • Complex regional pain syndrome was associated only with tobacco use, and no substance was associated with joint stiffness.
Caveat

This is a retrospective administrative-database analysis that relies on diagnostic and billing codes for both exposures and outcomes, so it cannot capture dose, timing, or verify actual substance use.

Burns & Wounds

10 papers this week

The Use of Kerecis Omega3 Wound Fish Skin Graft for the Treatment of Deep Burn Wounds.

In a burn-center case series, fish-skin graft helped roughly half of deep partial-thickness burns heal without grafting, but every full-thickness burn still required skin grafting or further reconstruction.
Overview

A retrospective single-center case series of 27 patients with deep partial-thickness and full-thickness burns treated with the Kerecis Omega3 Wound fish-skin scaffold, assessing healing, need for further surgery, and complications.

Key Findings
  • Almost 50% of deep partial-thickness burns healed spontaneously after fish-skin treatment.
  • All full-thickness burns went on to require skin grafting or other reconstructive measures.
  • Postsurgical infection requiring product removal occurred in 4 patients, and contractures developed in 3 full-thickness cases.
Caveat

This is a small, uncontrolled single-center series with no comparator group, so the observed spontaneous healing cannot be attributed to the fish-skin graft over standard care.

Collagen promotes PD-L1 overexpression in fibroblasts through binding to CD44 and activating YAP1 signaling during keloid formation.

This laboratory study suggests deposited collagen drives keloid formation by binding fibroblast CD44 and activating YAP1 signaling to overexpress PD-L1, creating a local immunosuppressive environment.
Overview

A laboratory mechanistic study of keloid versus normal skin tissue and primary keloid fibroblasts used immunofluorescence, RT-qPCR, and western blot to map immune-cell infiltration and a collagen/CD44/YAP1/PD-L1 signaling axis.

Key Findings
  • Keloid tissue showed increased CD4+ T cells, CD86+ macrophages, and FOXP3+ Treg infiltration alongside reduced CD8+ T-cell infiltration, consistent with an immunosuppressive microenvironment.
  • PD-L1 was overexpressed in keloid fibroblasts relative to normal skin.
  • Collagen I bound CD44 to activate YAP1 signaling, driving PD-L1 overexpression and sustained fibroblast proliferation in vitro.
Caveat

This is mechanistic tissue and cell-culture work without in-vivo or therapeutic validation, so the proposed pathway has not been shown to be reversible or clinically targetable.

Effects of silicone-based formulations on laser-induced microscopic lesions: results from a randomized trial using an in vivo human wound healing model.

Silicone-based gels applied to laser-induced skin microlesions reduced acute erythema and lesion area and depth and sped epidermal barrier recovery compared with untreated skin.
Overview

A randomized in vivo human wound-model trial treated fractional CO2-laser microlesions on the volar forearm with one of two approved silicone-based formulations or left them untreated as control, tracking erythema and lesion microarchitecture by dermoscopy and line-field confocal OCT from Day 1 to Day 14.

Key Findings
  • Silicone formulations significantly reduced acute erythema and its overall intensity versus untreated control.
  • Treatment produced a highly significant reduction in lesion area and depth, with lower inter-individual variability than control.
  • LC-OCT imaging showed faster restoration of the epidermal barrier with silicone treatment.
Caveat

The model uses controlled laser microlesions on healthy forearm skin rather than real surgical scars or chronic wounds, and the abstract reports no participant count, limiting how far the findings extend to clinical scar management.

Identifying Risk Factors for Readmission amongst Unhoused Burn Patients.

Unhoused burn patients were readmitted within 30 days more often than housed patients (8.6% vs 5.2%), and leaving against medical advice was the strongest modifiable predictor.
Overview

A retrospective analysis of 18,607 burn admissions in the 2022 Nationwide Readmissions Database compared 30-day burn-related readmission between unhoused (n=1,130) and housed patients and identified readmission risk factors specific to the unhoused group.

Key Findings
  • Unhoused patients were readmitted with a burn diagnosis at 8.6% versus 5.2% for housed patients (p<0.001), a gap that persisted after adjustment for other readmission risk factors.
  • Leaving against medical advice carried the highest readmission risk (OR 4.1, 95% CI 2.6–6.6) and was the only potentially modifiable factor identified.
  • Injury severity and location also predicted readmission, including third-degree burns (OR 2.4) plus trunk, upper-extremity, and lower-extremity burns.
  • Despite higher rates of schizophrenia, bipolar disorder, and substance use, these psychiatric and substance-use diagnoses did not increase readmission risk in the unhoused group.
Caveat

Findings rely on administrative ICD-10 coding, and only encounters re-coded with a burn diagnosis counted as readmissions, so readmissions for other causes or to out-of-state hospitals were not captured.

LIBRE GO!: A Mobile Application for Longitudinal Social Participation Assessment and Resources Connection after Burn Injury.

A smartphone app that digitizes the validated LIBRE social-participation measure and links survivors to community resources was rated highly acceptable, appropriate, and feasible in early testing.
Overview

A design-and-development report with pilot testing in eight burn survivors describes LIBRE GO!, a mobile application digitizing the LIBRE Profile and connecting users to community-based resources, evaluated with implementation-outcome measures and focus groups.

Key Findings
  • The app is organized into four functions (new LIBRE survey, My Scores, Resources, and About), built through an iterative user-centered process involving survivors and clinicians.
  • Implementation-outcome ratings were favorable: acceptability 4.13, appropriateness 4.28, and feasibility 4.31 out of 5.
  • In focus groups, participants described the app as easy to use and valuable for tracking social engagement and finding resources.
Caveat

Pilot testing involved only eight survivors and assessed acceptability and feasibility, not whether the app improves social participation or any clinical outcome.

Diagnostic strategies in necrotizing soft tissue infections: from clinical scores to multi-omics and machine learning.

This review argues that conventional necrotizing-infection scores like LRINEC have limited diagnostic reliability, and that multi-omics and machine-learning approaches may enable earlier, more individualized diagnosis.
Overview

A narrative review traces the evolution of diagnostic strategies for necrotizing soft tissue infections, from clinical scoring systems to emerging multi-omics and machine-learning methods, and proposes an integrated diagnostic roadmap.

Key Findings
  • Scoring systems such as LRINEC and its variants are limited by variable sensitivity and insufficient predictive value across diverse populations, constraining early recognition.
  • Multi-omics technologies and machine learning are highlighted for identifying molecular biomarkers and predictive patterns of NSTI onset and progression.
  • The authors propose an integrated diagnostic roadmap combining clinical assessment, imaging, microbiology, host-response biomarkers, and omics data.
Caveat

This is a narrative, non-systematic review with no pooled data, and the omics- and machine-learning-based tools it describes remain largely investigational rather than validated for clinical use.

An exploration of burn survivors' lived experiences and relevance of Trauma Informed Care principles in burn care: A meta-synthesis.

A synthesis of qualitative studies finds that burn survivors' recovery is dominated by internal losses and emotionally charged healthcare encounters, supporting Trauma Informed Care principles in burn services.
Overview

A qualitative meta-synthesis of published studies on burn survivors' lived experiences interprets findings through a Trauma Informed Care lens and psychological theory, yielding five interconnected themes grouped under two premises.

Key Findings
  • The 'Internal Experiences' premise captured self-blame, loss of self, self-esteem, power, and altered body image, alongside physical and psychological suffering such as pain, itch, fear, and isolation.
  • The 'Harms and Hindrances' premise described how service delivery, staff interactions, coping strategies, and social systems shaped survivors' adjustment.
  • Survivors' accounts underscored the emotional saliency of healthcare systems in promoting or hindering psychological healing, supporting conscious integration of Trauma Informed Care.
Caveat

As an interpretive synthesis of qualitative work, the themes are not quantifiable and depend on the included studies' contexts, which the abstract does not enumerate.

A Prospective Clinical Study to Confirm the Safety and Performance of a Canister-Based Single-Use Negative Pressure Wound Therapy System in Low-to-Moderately Exuding Chronic Wounds.

A single-use, canister-based negative-pressure wound therapy device was associated with wound improvement at most clinic visits and reduced wound size over 28 days, with no unexpected safety problems.
Overview

A prospective, non-comparative multicenter study of 104 patients at 14 European sites evaluated a canister-based single-use negative-pressure wound therapy system in low-to-moderately exuding diabetic foot, venous leg, and pressure ulcers over up to 28 days.

Key Findings
  • Wounds were judged improved since the prior visit at 76.3% of visits, with reductions in both absolute and relative wound size over the study period.
  • The wound mix spanned diabetic foot (34), venous leg (34), and pressure ulcers (36) across inpatient (67.7%) and outpatient (32.3%) settings.
  • Investigators rated the device effective and easy to apply, with no unexpected safety concerns reported.
Caveat

The study had no comparison group, so wound improvement cannot be attributed to the device rather than to standard care or natural healing.

99mTc-methoxy-isobutyl-isonitrile Scintigraphy Demonstrates Enhanced Foot Perfusion Following Dellon Decompression in Patients With Diabetic Neuropathy.

In a small prospective series, Dellon tarsal tunnel decompression improved foot sensation and perfusion, and all diabetic foot ulcers had healed by 12 months.
Overview

A prospective single-arm study of 10 patients with chronic diabetic foot ulcers assessed sensory function and foot perfusion before and 12 months after Dellon tarsal tunnel decompression, using 99mTc-MIBI scintigraphy and Doppler ultrasonography.

Key Findings
  • Posterior tibial artery mean flow velocity rose from 43.2 to 79.4 cm/s (P<0.0001), alongside significant improvement in two-point discrimination.
  • Scintigraphy showed increased operative-foot uptake with a mean perfusion increase of 38.5% at rest and 36.8% under stress, plus shorter time-to-peak activity.
  • All diabetic foot ulcers healed by the 12-month follow-up, which the authors link to improved microvascular perfusion.
Caveat

With only 10 patients and no control group, the healing and perfusion gains cannot be separated from concurrent ulcer care or natural history.

An interpretable machine learning model for diabetic foot risk classification in patients with diabetes.

An interpretable machine-learning model classified patients' current diabetic-foot risk status with high accuracy (AUC ~0.92) using sixteen routinely available clinical features, holding up in an external cohort.
Overview

A retrospective development study of 1938 diabetic patients at one center, with external validation in 695 patients at another, compared ten machine-learning models for classifying current diabetic-foot risk status.

Key Findings
  • The best model, CatBoost, reached an internal-test AUC of 0.935 with accuracy, precision, and recall of 0.88.
  • Performance held in the external validation cohort, with an AUC of 0.922 and accuracy, precision, recall, and F1 all equal to 0.88.
  • The model used sixteen clinically accessible features selected by recursive feature elimination, with SHAP applied to make predictions interpretable.
Caveat

The study is retrospective, and the model classifies risk status already evident at evaluation rather than predicting future ulcers, amputation, or healing, limiting its use for forecasting outcomes.

Breast

10 papers this week

Immediate versus delayed free-flap breast reconstruction: Higher readmission after immediate reconstruction in a 20,415-patient IPTW NSQIP cohort.

After rigorous risk adjustment, immediate free-flap breast reconstruction was associated with modestly higher 30-day readmission, transfusion, and reoperation than delayed reconstruction, but no increase in life-threatening complications.
Overview

Retrospective cohort of 20,415 women undergoing free-flap breast reconstruction in the ACS-NSQIP registry (2012–2022), comparing immediate versus delayed reconstruction for 30-day complications using inverse probability of treatment weighting.

Key Findings
  • Immediate reconstruction carried higher odds of 30-day readmission (OR 1.35, 95% CI 1.18–1.54; 6.4% vs 5.1%).
  • Perioperative transfusion was more common after immediate reconstruction (OR 1.43, 95% CI 1.28–1.59; 9.8% vs 7.5%).
  • Unplanned return to the operating room was also more frequent (OR 1.27, 95% CI 1.16–1.40; 12.2% vs 10.7%).
  • Major systemic events such as sepsis, stroke, myocardial infarction, and cardiac arrest were rare (<2%) and comparable between groups.
Caveat

As a registry-based observational study, NSQIP captures only 30-day outcomes and lacks oncologic, radiotherapy, and flap-specific detail, so residual confounding by indication cannot be excluded despite weighting.

Impact of operative time on 30-day surgical outcomes following tissue expander-based breast reconstruction.

Longer operative time was associated with a small but consistent increase in mastectomy skin flap necrosis and several other 30-day complications after tissue expander breast reconstruction.
Overview

A retrospective cohort of 1874 patients undergoing tissue expander-based breast reconstruction evaluated the association between operative duration and 30-day complications, modeling odds per 10-minute increase for unilateral and bilateral cases.

Key Findings
  • In unilateral cases, each 10-minute increase was associated with higher odds of mastectomy skin flap necrosis (aOR 1.04) and unplanned reoperation (aOR 1.03).
  • In bilateral cases, each 10-minute increase raised odds of MSFN, unplanned readmission, and surgical site infection (each aOR 1.02).
  • Mastectomy skin flap necrosis was the one outcome consistently associated with operative time across both unilateral and bilateral reconstructions.
Caveat

The design is retrospective and the per-10-minute odds ratios are small with confidence intervals near 1.0; operative time likely reflects case complexity rather than acting as an independent cause.

"Body composition as an indicator of the risk of complications after microvascular DIEP breast reconstruction".

In DIEP breast reconstruction, sarcopenic overweight (low muscle mass combined with high BMI) was associated with roughly an eightfold higher complication risk, whereas low muscle mass or high BMI alone was not.
Overview

Retrospective cohort of 204 patients undergoing DIEP breast reconstruction at a single tertiary center (2018–2021), using preoperative CT-derived skeletal muscle index and BMI to classify patients into four body-composition phenotypes and compare complication rates.

Key Findings
  • Sarcopenic overweight (SMI <38.5 cm²/m² with BMI >25 kg/m²) was present in 14.2% of patients, while complications occurred in 18.1% overall.
  • Sarcopenic overweight was associated with higher early-flap and overall complication rates than the other three phenotypes (p = 0.009 and p = 0.034).
  • On multivariable analysis, sarcopenic overweight was the only independent predictor of overall complications (OR 8.66, 95% CI 1.68–44.62); neither sarcopenia nor overweight alone was independently associated.
Caveat

This was a single-center retrospective study with only 29 sarcopenic-overweight patients, producing a very wide confidence interval (OR 1.68–44.62) and an imprecise effect estimate.

Predicting device-related complications among women undergoing breast implant surgeries.

Machine-learning models trained on a large national breast-device registry predicted revision for device-related complications with high accuracy, flagging implant manufacturer, shell texture, and older age as leading contributors.
Overview

Cohort study of 128,520 primary breast implant procedures (106,413 cosmetic and 22,107 reconstructive) from the Australian Breast Device Registry (2012–2023), developing and validating separate machine-learning models to predict revision surgery for device-related complications.

Key Findings
  • In the cosmetic cohort, a random forest model achieved the best discrimination (AUC = 0.92), with Allergan manufacturer, macrotextured shell, and older patient age as key predictors.
  • In the reconstructive cohort, the random forest model performed similarly (AUC = 0.91), with Allergan manufacturer, incision site, acellular dermal matrix use, older age, and concurrent mastectomy as significant predictors.
  • Socioeconomic advantage was positively associated with revision in both cohorts.
Caveat

Registry data capture only documented revision surgery rather than all complications, and the identified predictors are associative; without external validation outside Australia, performance in other populations is unknown.

Venous Drainage and Nipple-Areolar Complex Necrosis After Nipple-Sparing Mastectomy: A Cadaveric and Prospective Clinical Cohort Study.

Loss of cutaneous peri-areolar vein branches predicted nipple-areolar complex necrosis after nipple-sparing mastectomy, suggesting venous integrity matters alongside arterial perfusion.
Overview

Cadaveric study plus a prospective cohort of 123 breasts undergoing nipple-sparing mastectomy with immediate implant-based reconstruction, using near-infrared imaging to quantify peri-areolar vein branch loss and build a prediction model for clinically significant NAC necrosis, compared with intraoperative indocyanine green angiography in 32 breasts.

Key Findings
  • Clinically significant NAC necrosis occurred in 19 of 123 breasts (15.4%).
  • Higher vein branch loss, greater mastectomy weight, higher BMI, and diabetes were associated with necrosis on univariate analysis, and on multivariable analysis the effect of vein branch loss increased with mastectomy weight.
  • The prediction model showed strong discrimination (AUROC 0.902, 95% CI 0.82–0.98) and identified a low-risk subset among breasts with poor ICG perfusion in which no significant necrosis occurred.
Caveat

This was a single-center cohort with only 19 necrosis events, and the model was developed and assessed in the same patients without external validation, raising the risk of overfitting.

Chest Wall Perforator Flaps in Oncoplastic Breast Surgery: A Series of 157 Consecutive Cases at the Paris Breast Center.

In a large single-center series, chest wall perforator flaps for breast-conserving oncoplastic surgery achieved low complication and re-excision rates with no flap loss and favorable medium-term oncologic outcomes.
Overview

Single-institution retrospective series of 157 patients with early-stage breast cancer treated with chest wall perforator flaps for breast-conserving surgery at the Paris Breast Center (2005–2024), with complication, re-excision, and conversion-to-mastectomy rates as primary outcomes over a median follow-up exceeding 4 years.

Key Findings
  • Early complications (grade ≥II) occurred in 5.1% of patients, with no partial or total flap loss.
  • The re-excision rate was 5.7%, and completion mastectomy was required in only 0.6%.
  • Over a median follow-up of 48 months, local recurrence occurred in 2.5% and distant recurrence in 6.4%, with no deaths.
Caveat

This was a retrospective single-center series without a comparison group, so the favorable complication and recurrence rates cannot be separated from patient selection.

Beyond the DIEP Flap: Thigh-Based Autologous Breast Reconstruction.

This review outlines that thigh-based free flaps are a viable autologous breast reconstruction option when abdominal tissue is unavailable, with technical refinements improving donor-site outcomes.
Overview

Narrative review of thigh-based free flaps for autologous breast reconstruction, covering the gracilis myocutaneous, profunda artery perforator, and lateral thigh perforator flaps, including indications, anatomy, vascular pedicles, harvest technique, and donor-site management.

Key Findings
  • Common critiques of thigh-based flaps, namely inadequate flap volume and donor-site issues (appearance, sensory change, healing), have been mitigated by technical refinements yielding more predictable outcomes.
  • The article compares the gracilis myocutaneous, profunda artery perforator, and lateral thigh perforator flaps, detailing their anatomy, landmarks, and vascular pedicles.
  • Practical pearls address flap harvest, aesthetic optimization, and management of donor-site healing and complications.
Caveat

This is a narrative review rather than a systematic review or comparative study, so its guidance reflects expert synthesis and cited literature rather than pooled or controlled outcome data.

Impact of Breast Cancer Surgery on Physical Well-Being of the Chest: A Longitudinal BREAST-Q Study.

One year after surgery, breast-conserving surgery patients showed the largest decline in chest physical well-being and immediate reconstruction patients the smallest, with more intense radiation associated with greater declines.
Overview

Retrospective longitudinal study of 517 patients with stage 0–III breast cancer treated with breast-conserving surgery, mastectomy alone, or mastectomy with immediate reconstruction (2015–2019), comparing change in BREAST-Q Physical Well-Being: Chest scores from before surgery to 1 year afterward.

Key Findings
  • Breast-conserving surgery showed the greatest decline (15.3 points, 89.1 to 73.8) despite the highest baseline, followed by mastectomy alone at 12.7 points.
  • Immediate breast reconstruction had the smallest decline (3.7 points), below the 4-point minimal important difference threshold.
  • Among the 262 patients who received radiation, mean decline was 15.2 points, and regional node irradiation with boost showed the greatest decline at 21.5 points.
Caveat

Treatment groups were not randomized and differed in baseline scores and clinical characteristics, so differences in decline may partly reflect patient selection rather than the operations themselves.

Microbiologically confirmed tissue expander and breast implant infections: Evaluating risk factors for recurrence and optimal treatment strategies.

Among microbiologically confirmed breast prosthesis infections, one-stage exchange carried the highest recurrence, while two-stage exchange and explantation were associated with lower recurrence.
Overview

Single-center retrospective cohort of 174 confirmed prosthesis infections (67 implant and 107 tissue expander) treated 2017–2024, comparing infection recurrence within 12 months across one-stage exchange, two-stage exchange, and explantation.

Key Findings
  • Recurrence occurred in 16% of implant and 21% of tissue expander infections, and one-stage exchange had the highest recurrence (38% implant, 60% tissue expander).
  • Two-stage exchange and explantation were associated with lower recurrence risk, although some comparisons did not reach statistical significance.
  • Among tissue expander cases, antibiotic spacer use was independently associated with increased recurrence (adjusted OR 5.38, 95% CI 1.06–27.22).
Caveat

This was a small retrospective single-center cohort with non-randomized treatment, so surgeons likely chose more aggressive strategies for higher-risk infections, confounding the comparison.

Safety of Biologic and Immune-modulating Agents in Breast Surgery Procedures: A Retrospective Cohort Analysis.

Preoperative use of biologic or immune-modulating agents was not associated with increased postoperative complications after breast reconstruction or augmentation in a large matched database analysis.
Overview

Retrospective propensity-matched cohort of 7,960 patients (3,980 with and 3,980 without biologic or immune-modulating exposure within six months of surgery) drawn from the TriNetX database, comparing postoperative complications after breast reconstruction or augmentation at 30 days, 90 days, and 6 months.

Key Findings
  • Among 211,105 patients identified, 4,024 had biologic exposure, and after 1:1 propensity matching 3,980 patients remained in each cohort.
  • Complication rates were comparable between groups at all timepoints (p > 0.05).
  • Biologic exposure was not associated with increased wound, infectious, implant-revision, or readmission complications.
Caveat

This was a retrospective claims-database analysis relying on diagnostic and procedure codes, which cannot capture biologic dosing, timing of the last dose, or perioperative holding, and may misclassify exposure and complications.

Aesthetic

10 papers this week

Antidepressants and postoperative complications in breast reduction surgery: A retrospective association study.

Preoperative antidepressant use was associated with modest increases in infection, wound dehiscence, sepsis, and opioid prescribing after breast reduction, without an increase in bleeding complications.
Overview

A propensity-matched retrospective cohort of 14,822 patients drawn from the TriNetX network compared adults undergoing bilateral breast reduction (2010–2025) with versus without recent antidepressant exposure, balancing demographics, comorbidities, and laboratory values to assess 90-day postoperative outcomes.

Key Findings
  • Antidepressant users had higher rates of wound dehiscence (4.1% vs. 2.8%), surgical-site infection (5.1% vs. 4.1%), and sepsis (0.4% vs. 0.2%).
  • Hematoma and seroma rates did not differ between groups, indicating no increase in bleeding complications.
  • Postoperative opioid prescribing was higher among antidepressant users (29.1% vs. 23.8%).
  • SSRIs carried slightly higher risk than SNRIs, and patients on two or more antidepressants had higher infection and overall complication rates than those on a single agent.
Caveat

This is a retrospective, observational analysis of a federated database; residual confounding by depression severity and the underlying indication cannot be excluded, and the authors frame the associations as hypothesis-generating.

A Muscle-Based Approach to Superior Orbital Sulcus Hollowness: Preseptal Orbicularis Oculi Flap in Upper Blepharoplasty.

A medial-pedicled preseptal orbicularis oculi muscle flap appears to be a safe alternative to fat grafting for correcting superior orbital sulcus hollowness, with patient-reported outcomes comparable to conventional blepharoplasty.
Overview

A retrospective cohort of 481 patients undergoing upper blepharoplasty (2017–2024) included 45 women who received additional sulcus correction with a medial-pedicled preseptal orbicularis oculi muscle flap, whose complications and FACE-Q outcomes were compared with those of conventional blepharoplasty.

Key Findings
  • FACE-Q Adverse Effects scores showed no significant difference between the flap and conventional groups (U = 8828.0, p = 0.251).
  • Transient supraorbital hypoesthesia occurred in 71% of flap patients and resolved within a few months, with no cases of flap necrosis.
  • In the conventional group, medial canthal scarring developed in 16 patients, four of whom required revision.
Caveat

Only 45 patients received the flap, follow-up averaged 8 months, and the design was nonrandomized with men excluded, yielding Level IV evidence that limits comparison against fat grafting.

Ultrasound in Gluteal Fat Grafting: Safety Tool, Standard of Care, or Emerging Evidence?: A Scoping Review.

Intraoperative ultrasound appears to be a useful safety adjunct during gluteal fat grafting, but the supporting evidence is limited and largely non-comparative.
Overview

A scoping review of nine studies (2018–2025), conducted per PRISMA-ScR and Joanna Briggs Institute methodology across six databases, examined intraoperative ultrasound use in adults undergoing gluteal fat grafting.

Key Findings
  • The evidence base was predominantly observational case series plus one systematic review with meta-analysis, with no randomized or high-quality comparative studies identified.
  • Ultrasound was used mainly to guide cannula positioning and confirm subcutaneous injection in real time, with verification relying on intraoperative visualization rather than standardized imaging-based confirmation.
  • Across the included studies, no cases of fat embolism or procedure-related mortality were reported.
Caveat

Because the review pools mostly non-comparative case series, the absence of reported embolism cannot establish that ultrasound reduces risk, given the lack of comparator groups and likely reporting bias.

PRISMA (Pectoralis-Rib Implant Support and Muscle Adjustment): An Innovative Technique for Secondary Mastopexy.

The PRISMA dual-plane technique achieved ptosis correction in all secondary mastopexy cases, with stable anthropometric results at 12 months and a low complication rate.
Overview

A prospective observational cohort of 74 patients with prior breast augmentation underwent secondary mastopexy using a modified dual-plane technique with muscular fixation, evaluated by standardized anthropometric measurements preoperatively, immediately postoperatively, and at 12 months.

Key Findings
  • Ptosis correction was achieved in all cases, with a mean clavicle-to-nipple reduction of ~5.3 cm bilaterally (P < 0.001).
  • Clavicle-to-upper-implant-border distance improved, indicating upper pole fullness, and inferior pole measurements showed controlled expansion without bottoming out.
  • The overall complication rate was 6.76%, with no infection, hematoma, or total nipple-areola complex necrosis, and outcomes remained stable at 12 months.
Caveat

This is a single-arm study with no comparator group, only 12-month follow-up, and surgeon-derived anthropometric outcomes rather than blinded or patient-reported measures.

The Blood Supply of the Lips: A Systematic Review and Meta-Analysis.

The labial arteries vary widely in presence, position, and depth, and no lip plane can be considered free of vessels, underscoring the vascular risk of perioral injection.
Overview

A systematic review and meta-analysis of 23 studies searched across four databases pooled anatomical data on the superior and inferior labial arteries and introduced a proposed perioral perfusion hypothesis.

Key Findings
  • The superior labial artery was absent in 3.55% of cases and, when present, most often arose above the oral commissure (80.71%) at a mean of 11.95 mm.
  • The inferior labial artery was absent in 13.45% of cases and most frequently located below the commissure (72.44%) at a mean of 21.99 mm.
  • Both vessels most commonly coursed in the submucosal plane (SLA up to 84.8%, ILA 81.25%), at a mean depth of approximately 5.2 mm.
  • The authors propose a "steal phenomenon" of redistribution from the upper lip toward nasal and ophthalmic territories through pre-existing anastomoses to explain the upper lip's susceptibility.
Caveat

This Level IV review pools heterogeneous cadaveric and imaging studies; the steal phenomenon is a proposed hypothesis that was not empirically tested, and pooled frequencies obscure substantial inter-study variability.

Menstrual Cycle Phase Does Not Affect Blood Loss in High-Energy Lipoabdominoplasty: A Prospective Controlled Study.

Menstrual cycle phase did not affect intraoperative blood loss or early outcomes in lipoabdominoplasty, supporting cycle-independent surgical scheduling.
Overview

A prospective controlled study of 90 women with regular ovulatory cycles, stratified into perimenstrual, periovulatory, and luteal groups, measured intraoperative blood loss (corrected suction and gravimetric sponge analysis) and 48-hour drainage after standardized lipoabdominoplasty.

Key Findings
  • There was no significant difference in intraoperative blood loss across phases (480 vs. 460 vs. 455 mL; p = 0.62) or in postoperative drainage (p = 0.78).
  • Hemoglobin decline, drain duration, and complication rates were comparable across groups (seroma 6%, hematoma 4%, transfusion 1%).
  • On correlation analysis, BMI and excised tissue weight, but not menstrual phase, were independent predictors of blood loss.
Caveat

Phase was assigned by cycle day rather than hormone assays in a single-center sample of roughly 30 patients per group, which may limit power to detect small between-phase differences.

Five-year Patient-reported Outcomes Following Primary Breast Augmentation With Polyurethane-coated Implants: Development and Preliminary Validation of a Device-specific Instrument.

Polyurethane-coated breast implants showed sustained high patient-reported satisfaction at five years, and the newly developed device-specific PU-PRO instrument demonstrated preliminary reliability and validity.
Overview

A retrospective cohort of 110 patients who underwent primary augmentation with polyurethane-coated implants completed a 15-item device-specific instrument (PU-PRO) at a mean 5.2-year follow-up, with psychometric evaluation including factor analysis and test-retest reliability.

Key Findings
  • Among the 90% who completed the 5-year assessment, mean scores (0–100) were highest for Aesthetic Satisfaction at 84.5 ± 11.9, alongside Perception (81.3) and Postoperative Experience (78.2).
  • Only one patient (1%) reported clinically evident rippling, and no revision surgeries occurred during follow-up.
  • The PU-PRO showed high internal consistency (Cronbach's α 0.84–0.91), a three-factor structure explaining 68% of variance, and ICC values of 0.88–0.93.
Caveat

This single-cohort study lacked a comparator implant group and relied on a newly developed, not-yet-externally-validated instrument, with retrospective design raising the possibility of a selectively satisfied cohort.

Revisiting the Deep Fatty and Fascial Layers Between the Temple and the Midface: An Ultrasound-based Investigation.

Ultrasound demonstrates continuous deep fatty and fascial pathways connecting the temple and midface, which may explain filler spread between these regions.
Overview

A cross-sectional study of 40 volunteers used standardized bilateral facial ultrasonography with a 20-MHz linear probe across six transducer positions to characterize the continuity of deep fatty and fascial layers between the temple and midface in treatment-naïve adults.

Key Findings
  • Deep temporal fat transitioned from a multilaminar to a unilaminar pattern as it crossed the zygoma, then re-expanded to a continuous multilaminar arrangement in the lateral and medial midface.
  • Lateral spread was limited by dense preauricular fascia, while anterior boundaries were formed by the zygomaticus major and minor muscles and associated ligaments.
  • The imaging findings were corroborated by a second examiner, three body donors, and histology.
Caveat

The sample was small and limited to treatment-naïve healthy volunteers, ultrasound interpretation is operator-dependent, and the study describes anatomy rather than testing clinical outcomes of injection.

Emergence Point of the Zygomaticotemporal Nerve Relative to the Marginal Tubercle of the Zygomatic bone: a Cadaveric Study with Clinical Implications.

The marginal tubercle of the zygomatic bone is a consistent palpable landmark for locating where the zygomaticotemporal nerve emerges, which sits roughly 4.5 mm above the tubercle.
Overview

This cadaveric study of 36 hemifaces from 20 cadavers mapped the emergence point of the zygomaticotemporal nerve relative to the marginal tubercle and the lateral canthus, and examined its fascial relationships to the middle temporal vein and the frontal branch of the facial nerve.

Key Findings
  • The emergence point lay 4.5 ± 1.6 mm superior to the marginal tubercle, and 17.6 ± 2.7 mm lateral and 9.5 ± 2.9 mm superior to the lateral canthus.
  • The nerve and the middle temporal vein occupied the same fascial plane (vertical separation 7.3 ± 2.3 mm), whereas the frontal branch of the facial nerve coursed through a more superficial layer.
  • Facial proportions influenced the nerve's absolute position but did not alter its spatial relationship to the marginal tubercle.
Caveat

Findings come from a small number of cadaveric specimens and have not been validated by image-guided or clinical nerve blocks in living patients.

Impact of Facial Regions on Perceived Age: A 3D Modeling Study.

Among facial regions, the neck and jawline contributed most to a youthful appearance, while the perioral region contributed least.
Overview

In this perception study of 101 participants, a single aged female 3D head-and-neck model was digitally rejuvenated one region at a time (eyes, lips, midface–lower face, or neck–jawline), and viewers ranked the animated variants from youngest to oldest.

Key Findings
  • The neck–jawline ranked youngest most often (n = 54), while the perioral region ranked oldest most often (n = 71).
  • Mean ranks ordered the regions from youngest to oldest as neck–jawline (1.8), midface–lower face (2.2), periocular (2.6), and perioral (3.6) (P < .001).
  • All pairwise differences were significant except between the periocular and midface–lower face regions (P = 0.4).
Caveat

Results derive from isolated digital edits to one simulated female face, so they may not capture how combined, real surgical changes affect perceived age across diverse faces.

Sarcoma & Oncology

4 papers this week

Clinical Application of Eyelid Composite Tissue Flap in the Repair of Full-thickness Eyelid Margin Defects.

An eyelid composite tissue flap restored full-thickness eyelid margin defects up to two-thirds of lid length with complete flap survival in every patient.
Overview

This retrospective case series of 85 patients with eyelid-margin tumors used bilateral full-thickness advancement flaps incorporating the marginal arterial arcade for single-stage reconstruction after excision.

Key Findings
  • All 85 flaps survived completely with primary healing in every case.
  • Excised lesions were predominantly benign: 75 pigmented nevi, 8 basal cell carcinomas, and 2 squamous cell carcinomas.
  • No major complications such as significant notching, ectropion, or lagophthalmos were observed during follow-up.
Caveat

The series was retrospective and uncontrolled, dominated by benign lesions, and the follow-up duration was not specified, limiting conclusions about durability and oncologic adequacy.

Defining the Vascular Anomalies in Maffucci Syndrome: A Systematic Review.

Across the literature, definitions of Maffucci syndrome are inconsistent, with only 16% of reported patients carrying a vascular-anomaly diagnosis that matches a specific modern ISSVA label.
Overview

This systematic review of 265 articles and 220 patients from 183 primary reports evaluated how Maffucci syndrome has been defined and characterized the vascular anomalies described, benchmarked against ISSVA nomenclature.

Key Findings
  • More than half of articles named 'hemangioma' nonspecifically as the defining vascular anomaly, and only 2 used the current ISSVA definition of venous malformations ± spindle-cell hemangiomas.
  • Of 220 patients, only 36 (16%) had a diagnosis consistent with a specific ISSVA label, and just 9 (4%) had venous malformations per the 2018 definition.
  • 23 patients (11%) had spindle-cell hemangiomas without venous malformations, suggesting either lesion may be diagnostic of the syndrome.
Caveat

The review depends on heterogeneous, often outdated published terminology, so lesions could not be reclassified from original imaging or histology, likely undercounting the true range of vascular anomalies.

Dermatologists' Attitudes toward Ultrasound-guided One-step Excision for Cutaneous Melanoma: A Survey of Clinical Practice and Perceived Barriers.

Dermatologists chose ultrasound-guided one-step melanoma excision in only about a quarter of scenarios, rising to roughly half when the diagnosis was already confirmed by biopsy.
Overview

This survey of 53 dermatologists (57% response rate) in the Loire Valley, France used 9 clinical vignettes with dermoscopy and preoperative ultrasound measurements to assess attitudes toward single-stage melanoma surgery and perceived barriers.

Key Findings
  • One-step surgery was selected in 28% of scenarios overall, rising to 47% when diagnosis was biopsy-confirmed and falling to 24.5% without histopathological confirmation (p < 0.0001).
  • Most respondents rated ultrasound useful for thickness estimation (median Likert score 3, IQR 3–4) and believed patients would prefer a single procedure (median 4, IQR 3–5).
  • Leading barriers were limited access to high-resolution ultrasound (n = 18), concern about overtreatment (n = 14), and medico-legal risk without histopathology (n = 9).
Caveat

Responses came from a small, single-region sample reacting to hypothetical vignettes rather than real cases, so stated preferences may not reflect actual operative behavior.

Optimization and Prevention of Error in Surgical Site Identification.

Preventing wrong-site surgery in dermatologic and Mohs surgery appears to depend on layering multiple safeguards rather than relying on any single method.
Overview

This systematic review of studies published from 2014 to 2025 assessed strategies to reduce wrong-site surgery in dermatologic and Mohs micrographic surgery, spanning site verification, documentation, photography, technology adjuncts, and team protocols.

Key Findings
  • Effective strategies were multimodal, combining standardized documentation, pre-biopsy and patient-captured photography, and coordinate-based measurements.
  • Useful technology adjuncts included ultraviolet imaging and smartphone applications, alongside structured team verification protocols.
  • No single intervention was sufficient on its own; layered safeguards and patient engagement were described as critical to minimizing risk.
Caveat

This was a qualitative synthesis of heterogeneous studies without pooled effect estimates, so the actual magnitude of risk reduction from any given strategy cannot be quantified.

Artificial Intelligence in Surgery

5 papers this week

An intelligent MRI-based all-in-one diagnostic strategy for axillary lymph node status in breast cancer.

An MRI-based deep learning model predicted sentinel and non-sentinel axillary node status and flagged patients who might safely avoid axillary surgery.
Overview

This study developed BCALN-Net, a deep learning model trained on 6,271 patients, a hierarchical multitask MRI model that simultaneously predicts sentinel-node metastasis, sentinel-node metastatic burden, and non-sentinel-node metastasis in breast cancer.

Key Findings
  • The model predicted all three nodal endpoints with high and robust performance across molecular subtypes, tumor and nodal stages, receptor statuses, and menopausal status.
  • In a pooled analysis of 4,081 patients, the model outperformed clinical criteria in predicting which patients could omit invasive axillary procedures.
  • It packaged the three predictions into a single integrated, all-in-one diagnostic strategy intended to guide axillary surgery de-escalation.
Caveat

The abstract reports no specific accuracy or AUC values and describes retrospective imaging cohorts, so prospective and external validation are needed before clinical use.

Artificial Intelligence and Algorithmic Bias in Burn Care: A Literature Review of Ethical Challenges.

AI tools entering burn care may amplify existing inequities, because burn-specific models rarely test how they perform across demographic subgroups.
Overview

This narrative review of literature from 2010 to 2025 synthesized work on AI, predictive modeling, and digital tools in burn care, supplemented by evidence from critical care, emergency medicine, radiology, dermatology, and oncology, focused on bias, fairness, and interpretability.

Key Findings
  • Across medical domains, algorithms frequently misclassified outcomes for racial and ethnic minorities, socioeconomically disadvantaged patients, women, older adults, and those with complex comorbidities.
  • Burn-specific models rarely evaluated subgroup performance or reported the demographic composition of their training data.
  • Recurring problems included unrepresentative datasets, opaque modeling pipelines, and absent bias audits, with ethical analyses fragmented and seldom grounded in established frameworks.
Caveat

This was a non-systematic narrative review that drew much of its evidence from specialties outside burn care, and it offers no quantitative estimates of bias specific to burn populations.

Artificial intelligence-based decision support in simulated free flap Re-exploration for head and neck reconstruction. A case-based comparative study.

Large language models matched expert ratings for recognizing free flap compromise in simulated head and neck scenarios but diverged on management planning, which the authors say does not support independent clinical use.
Overview

This case-based comparative study of 30 simulated free flap compromise scenarios (15 intraoperative, 15 postoperative) had four consultant microsurgeons rate the diagnostic and management responses of three large language models (ChatGPT, Gemini, Copilot) on 5-point Likert scales.

Key Findings
  • Clinical accuracy ratings were high across all three models in both intraoperative and postoperative scenarios, with no significant between-model differences.
  • In intraoperative cases, usefulness of explanation differed significantly, with lower ratings for Copilot than Gemini.
  • In postoperative cases, Gemini outscored ChatGPT and Copilot on management recommendations and usefulness of explanation, and exceeded Copilot on overall confidence.
  • Potentially harmful recommendations were uncommon but differed between models in postoperative scenarios; interrater agreement was higher for intraoperative than postoperative cases.
Caveat

Findings come from standardized, simulated text scenarios scored on Likert scales rather than real patients or clinical outcomes, and rest on just 30 cases and four raters.

Automated Identification of Surgical Site Infections From Electronic Medical Records: Retrospective Observational Predictive Modeling Study.

Adding clinical text and temporal laboratory data to deep-learning models improved automated detection of surgical site infections over structured data alone and over a rule-based system.
Overview

In a retrospective predictive-modeling study of 5,996 surgical cases drawn from two academic medical centers, investigators tested machine-learning approaches that combined structured EHR data, clinical text notes, and temporal laboratory values to detect surgical site infections.

Key Findings
  • Models combining structured data with clinical text outperformed structured data alone (F1 0.68 vs 0.55).
  • Adding temporal laboratory features improved performance further to F1 0.70.
  • Deep learning leveraging large language models beat the state-of-the-art rule-based system (F1 0.70 vs 0.43).
  • The best configuration achieved a precision of 0.38 at 0.9 recall, implying many false positives when most true infections are captured.
Caveat

The models were developed and tested within a single two-hospital system using retrospective records, and the tool flags cases for surveillance rather than confirming infections, with modest precision at high recall.

Intelligent Biosensors for Diabetic Wound Monitoring.

Smart biosensor dressings that continuously track wound biomarkers such as pH, glucose, ROS, and MMP-9 may allow earlier detection of diabetic wound deterioration than passive dressings.
Overview

This narrative review of intelligent biosensors for diabetic wound monitoring integrates front-end sensor-interface engineering with back-end data analysis for continuous, non-invasive tracking of the wound microenvironment.

Key Findings
  • Material strategies including active fluid management, anti-biofouling zwitterionic networks, and nanozyme-based ROS scavenging are proposed to keep sensing interfaces stable in the hostile wound microenvironment.
  • In situ sensing targets a defined biomarker panel of pH, temperature, glucose, ROS, and MMP-9, using multiparameter decoupling techniques.
  • Portable devices and machine learning algorithms are highlighted for translating multimodal sensor signals into objective clinical metrics.
Caveat

This is a narrative review without quantitative synthesis, and the technologies discussed are largely preclinical with little human validation.

Translational & Hallmark Medicine

5 papers this week

Autologous fibroblast therapy for facial rejuvenation: A randomized open-label controlled study.

Injection of autologous fibroblast-containing micrografts produced greater improvement in wrinkles and skin elasticity at 12 months than a hyaluronic acid skin booster.
Overview

This randomized, open-label controlled trial of 40 patients with mild-to-moderate facial aging compared autologous fibroblast-containing micrografts (n=20) against a hyaluronic acid-based skin booster (n=20), with treatments at baseline, 1, and 3 months and follow-up to 12 months.

Key Findings
  • At 12 months, the fibroblast group showed significantly greater improvement in wrinkle depth, skin elasticity, and WSRS score than the HA booster group (p<0.01).
  • Both physician and patient evaluations favored the fibroblast group (p=0.049 and p=0.039), with higher reported satisfaction.
  • The injected micrografts contained roughly 2.78 million nucleated cells/mL at 89.6% viability, with a CD44-high, CD34/CD45-low immunophenotype.
Caveat

The trial was small, single-center, and open-label with no blinding, and all evaluations were reported by a single author, which raises the risk of assessment bias.

Advances in hemostatic biomaterials: biomimetic strategies, nanotechnology, and smart therapeutics.

Biomimetic, nanotechnology-based, and stimuli-responsive hemostatic materials offer targeted clotting and controlled drug release beyond compression and cautery, though clinical translation remains limited.
Overview

This narrative review of advanced hemostatic biomaterials surveys biomimetic designs, nanotechnology, stimuli-responsive polymers, 3D printing, and microfluidics for surgical and trauma bleeding control.

Key Findings
  • Biomimetic platelet- and fibrin-inspired designs are presented as enabling targeted clotting at the bleeding site.
  • Nanoparticle carriers, electrospun fibers, and stimuli-responsive polymers reportedly enable controlled drug release and enhanced wound adhesion.
  • 3D printing and microfluidics are highlighted for precise material customization and improved hemostatic efficiency.
  • Translation is constrained by biocompatibility, scalable manufacturing, and patient-specific customization challenges.
Caveat

This is a narrative review without systematic methodology or head-to-head efficacy data, and most materials remain at the laboratory stage.

Platelet-Rich Plasma: An Endogenous Bioregulatory Modulator Coordinating Soft Tissue Remodeling.

PRP appears to act as a context-dependent bioregulatory system whose biological effects vary substantially with preparation, rather than a simple growth-factor or volumizing agent.
Overview

This narrative review (Level III) synthesized PubMed/MEDLINE, Web of Science, and Google Scholar evidence on PRP, platelet-rich fibrin, and platelet-derived extracellular vesicles in soft-tissue repair, with literature considered through March 2026.

Key Findings
  • PRP is described as influencing multiple stages of soft-tissue remodeling, spanning inflammatory and immune regulation, angiogenesis, redox balance, and extracellular matrix turnover.
  • Proposed mechanisms include macrophage phenotypic modulation, TGF-β/Smad signaling, MMP activity, and mitochondrial transfer.
  • Preparation heterogeneity, including platelet concentration, leukocyte content, activation method, fibrin architecture, and release kinetics, is emphasized as a major source of variable biological behavior.
Caveat

As a Level III narrative review it cannot establish efficacy, and the lack of standardized PRP formulations across studies limits comparison and clinical recommendations.

A Roadmap to Perfused Skin: Defining the Next Generation of Research Questions in Cutaneous Tissue Engineering.

The authors argue that rapid, durable perfusion, not vessel density, is the decisive bottleneck for translating engineered skin substitutes into clinical use.
Overview

This critical narrative review reframes cutaneous tissue engineering around perfusion as the master functional endpoint rather than vessel density, analyzing the vascularization process as a staged sequence.

Key Findings
  • The vascularization bottleneck is reframed as a sequence of internal network formation, host inosculation, flow initiation, and perfusion stability.
  • The review distinguishes implantable skin substitutes from in vitro perfused platforms such as skin-on-chip systems, arguing they have different success criteria.
  • A proposed research agenda centers on functional benchmarking of perfusion, scaffold spatiotemporal coordination, immune-mural-lymphatic-vascular crosstalk, and scalable hierarchical vascular fabrication.
Caveat

This is a conceptual, opinion-based review that proposes a research framework rather than presenting new experimental data or a pooled evidence synthesis.

Extracellular Vesicles in Regenerative and Cosmetic Medicine: Safety, Clinical Effectiveness, Therapeutic Applications, and Regulatory Challenges.

Extracellular vesicles marketed as exosomes show regenerative potential in aesthetic medicine, but the evidence is heterogeneous and adverse events from unapproved products underscore the need for stronger regulation.
Overview

This narrative review paired with a qualitative survey of 12 aesthetic physicians in Colombia examined the mechanisms, effectiveness, safety, and regulation of extracellular vesicle and small extracellular vesicle interventions across aesthetic and regenerative indications.

Key Findings
  • EVs and sEVs are reported to promote extracellular matrix remodeling, angiogenesis, immunomodulation, and tissue repair across skin rejuvenation, hair restoration, wound healing, and pigmentation indications.
  • The evidence base is heterogeneous and limited by variable biologic sources and isolation and administration protocols, with few high-quality clinical trials.
  • Adverse reactions to unapproved products marketed as exosomes are highlighted as a driver for stronger regulatory oversight.
Caveat

Evidence is summarized narratively rather than pooled, and the physician-perception component is a small, single-country convenience sample of 12 respondents.

Cases

1 paper this week

Closure of Tracheoesophageal Fistula Employing the Superficial Circumflex Iliac Artery Perforator (SCIP) Flap: Report of Three Cases.

Kovacs-Sipos E et al.·Microsurgery Reconstruction & Microsurgery

This case series of three patients (ages 62–84) describes the first reported use of a free superficial circumflex iliac artery perforator (SCIP) flap to close acquired tracheoesophageal fistulas arising after total laryngectomy, with or without partial pharyngectomy, for head and neck malignancy.

Closing Notes

Much of this week's comparative work returns to a familiar question: whether some factor or technique actually changes the outcome. The differences it surfaces are mostly modest or absent, and the evidence is mostly observational. Risk-adjusted registry analysis found immediate and delayed free-flap breast reconstruction separated by only modest 30-day differences and no excess of life-threatening events; a propensity-matched cohort found recent immune-modulating exposure carried no added complication risk; a prospective study found menstrual phase irrelevant to lipoabdominoplasty blood loss; and a single-surgeon palatoplasty cohort matched fistula rates across narrow and wide clefts by tailoring the repair to gap width. The one place equivalence was tested rather than inferred, the randomized NEAPE trial, is also the one place it was not confirmed: a porcine collagen implant did not prove non-inferior to the gluteus maximus flap. That contrast is worth keeping in mind when reassurance rests on retrospective data.

A quieter thread runs through the reconstructive and breast pages: venous outflow as the thing surgeons are trying to measure. Quantitative indocyanine green parameters tracking congestion, peri-areolar vein loss predicting nipple necrosis, and venous-signal suppression on MR lymphangiography all point toward the outflow side of perfusion, which visual inspection reads poorly.

Until next Sunday,

Marius DryschMarius Drysch, MD, MHBA