Optimizing the Use of Pedicled versus Random Pattern Local Flaps in the Foot and Ankle.

Background: The aim of this study was to compare the use of pedicled local (PFs) versus random pattern flaps (RpFs) in foot and ankle reconstruction in patients with chronic, nonhealing wounds. Methods: A single-center, retrospective review of 204 patients with 118 PFs and 86 RpFs was performed. The primary outcome included rates of limb salvage. Results: PFs were used more often in the hindfoot (44.1% versus 30.2%, P = 0.045), lateral and medial surface (39.8% versus 18.6%, P = 0.001), and wounds containing exposed bone and hardware (78.8% versus 62.8%, P = 0.018). RpFs were used more for forefoot (19.8% versus 10.2%, P = 0.053) and plantar defects (58.1% versus 30.3%, P = 0.000). RpFs had a higher rate of immediate success (100% versus 95.8%, P = 0.053), with no significant differences in rate of long-term limb salvage (77.1% versus 69.8%, P = 0.237). PFs had higher rates of ischemia requiring intervention (11.0% versus 3.5%, P = 0.048). RpFs had a higher rate of minor amputations (15.12% versus 6.8%, P = 0.053) but similar rates of major amputation (15.1% versus 16.1%, P = 0.848). There were no significant differences in rates of mortality or ambulatory status. Conclusions: Both RpFs and PFs remain reliable options to reconstruct defects of the foot and ankle. Optimizing the use of each flap type should consider wound characteristics. RpFs are preferred for dorsal and plantar defects, whereas PFs are protective for minor infections and preferred for deeper wounds despite a higher rate of partial necrosis.

The Role of Local Flaps in Foot and Ankle Reconstruction: An Assessment of Outcomes Across 206 Patients with Chronic Wounds.

BACKGROUND: Reconstructive surgery has experienced a paradigm shift in favor of free flaps. Yet, local flaps may be of particular use in foot and ankle reconstruction among comorbid patient populations. Thus, we sought to better characterize long-term outcomes in this setting. METHODS: A single-center, retrospective cohort study of patients undergoing local muscle and fasciocutaneous flaps of the foot and ankle from January 2010-November 2022 was performed. Flap were performed on wounds measuring 3x6cm or smaller, and flap selection depended on preoperative vascular assessment, Doppler findings, comorbidity profile, and wound location, depth, and geometry. RESULTS: Two-hundred and six patients met inclusion criteria. Median age was 61.0 years (IQR 16.8), and comorbidities included diabetes mellitus (DM; n=149/206, 72.3%) and peripheral arterial disease (PAD; n=105/206, 51.0%). Presentations included chronic, non-healing wounds (n=77/206, 39.1%) or osteomyelitis (n=45/206, 22.8%), and most frequently extended to the bone (n=128/206, 62.1%). Eighty-seven patients (n=87/206, 42.2%) received muscle flaps, while 119 received fasciocutaneous flaps (n=119/206, 57.8%). Six patients (n=6/206, 2.9%) necessitated return to the operating room, with thrombosis occurring in two cases (n=2/206, 1.0%). Flap success rate was 98.1%. By a median follow-up duration of 21.7 months (IQR 39.0), 45 patients (n=45/206, 21.8%) necessitated ipsilateral amputation, 73% (n=145/199) were ambulatory, and two deaths were related to the operated wound (n=2/49, 4.1%). Multivariate analysis revealed positive predictors of complications included DM, end-stage renal disease, and prior histories of venous thromboembolism or smoking. CONCLUSION: Local flaps remain a reliable option to reconstruct smaller defects of the foot and ankle in a highly comorbid population.

Positive Bacterial Cultures on Spinal Wound Closure Do Not Predict Postoperative Outcomes.

BACKGROUND: Complex surgical back wounds represent significant morbidity in patients who have undergone spinal procedures requiring closure or revision by plastic surgeons. This study aimed to assess the utility of bacterial wound culture data for predicting surgical outcomes of wound management. METHODS: This study is a single-institution retrospective review of consecutive patients who required plastic surgery intervention for wound infection following spinal procedures between the years 2010 and 2021 (n = 70). Statistical analysis was performed for demographics, comorbidities, perioperative laboratory studies, and treatment methods. The primary outcomes of interest were rate of postoperative complications after soft tissue reconstruction and reconstructive failure. The secondary outcome of interest was time to healing in number of days. RESULTS: The overall complication rate after wound closure was 31.4%, with wound infection in 12.9%, seroma in 10%, dehiscence in 12.9%, and hematoma in 1.4%. Increasing number of debridements before wound closure increased the likelihood of a surgical complication of any kind (odds ratio [OR], 1.772; 95% confidence interval [CI], 1.045-3.002). Positive wound cultures before reconstruction were associated with development of seroma only (OR, 0.265; 95% CI, 0.078-0.893). Use of incisional vacuum-assisted closure devices significantly decreased the odds of postoperative wound dehiscence (OR, 0.179; 95% CI, 0.034-0.904) and increased odds of healing (hazard ratio, 3.638; 95% CI, 1.547-8.613). CONCLUSIONS: Positive wound cultures were not significantly associated with negative outcomes after complex closure or reconstruction of infected spinal surgical wounds. This finding emphasizes the importance of clinical judgment with a multidisciplinary approach to complex surgical back wounds over culture data for wound closure timing.

To Mesh or Not to Mesh: What Is the Ideal Meshing Ratio for Split Thickness Skin Grafting of the Lower Extremity?

Split-thickness skin grafts can provide effective autologous wound closure in patients with dysvascular comorbidities. Meshing the graft allows for reduced donor site morbidity and expanded coverage. This study directly compares outcomes across varying meshing ratios used to treat chronic lower extremity wounds. Patients who received split-thickness skin grafts to their lower extremity for chronic ulcers from December 2014 to December 2019 at a single center were retrospectively reviewed. Patients were stratified by meshing ratios: nonmeshed (including pie crusting), 1.5:1, and 3:1. The primary outcome was clinical "healing" as determined by surgeon discretion at 30 days, 60 days, and the latest follow-up. Secondary outcomes included postoperative complications, graft loss, ulcer recurrence, progression to amputation, and mortality. A total of 321 patients were identified. Wound sizes and location differed significantly, with 3:1 meshing applied to the largest wounds (187.8 ± 157.6 cm2; 1.5:1 meshed, 110.4 ± 103.9 cm2; nonmeshed 38.7 ± 55.5 cm2; p < .0001) mostly of the lower leg (n = 18, 75%; 1.5:1 meshed, n = 23, 43.4%; nonmeshed n = 62, 25.7%; p < .0001). Meshed grafts displayed a significantly higher proportion of healing at 30 and 60 days, but no differences persisted by the final follow-up (16.5 ± 20.5 months). Longitudinally, nonmeshed STSG was associated with most graft loss (46, 19.1%; p = .011) and ulcer recurrence (44, 18.3%; p = .011). Of the 3 meshing ratios, 3:1 exhibited the lowest rates of complications. Our results suggest that 3:1 meshing is a safe option for coverage of large lower extremity wounds to minimize donor site morbidity.

The Use of Flap Techniques to Preserve Limb Length in Patients with Transmetatarsal Amputations.

BACKGROUND: Chronic lower extremity wounds affect up to 13% of the US population. Transmetatarsal amputation (TMA) is frequently performed in patients with chronic forefoot wounds. TMA allows limb salvage and preserves functional gait, without need for prosthesis. Traditionally, when tension-free primary closure is not possible, a higher-level amputation is performed. This is the first series to evaluate the outcomes of local and free flap coverage of TMA stumps in patients with chronic foot wounds. METHODS: A retrospective cohort of patients who underwent TMA with flap coverage from 2015 through 2021 was reviewed. Primary outcomes included flap success, early postoperative complications, and long-term outcomes (limb salvage and ambulatory status). Patient-reported outcome measures using the Lower Extremity Functional Scale (LEFS) were also collected. RESULTS: Fifty patients underwent 51 flap reconstructions (26 local, 25 free flap) after TMA. Average age and body mass index were 58.5 years and 29.8 kg/m 2 , respectively. Comorbidities included diabetes [ n = 43 (86%)] and peripheral vascular disease [ n = 37 (74%)]. Flap success rate was 100%. At a mean follow-up of 24.8 months (range, 0.7 to 95.7 months), the limb salvage rate was 86.3% ( n = 44). Forty-four patients (88%) were ambulatory. The LEFS survey was completed by 24 surviving patients (54.5%). Mean LEFS score was 46.6 ± 13.9, correlating with 58.2% ± 17.4% of maximal function. CONCLUSIONS: Local and free flap reconstruction after TMA are viable methods of soft-tissue coverage for limb salvage. Applying plastic surgery flap techniques for TMA stump coverage allows for preservation of increased foot length and ambulation without a prosthesis. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, IV.

Free Tissue Transfer to the Lower Extremity in the Setting of Thrombocytosis and the Role of Antiplatelet Therapy: A Propensity Score-Matched Analysis.

BACKGROUND: Free tissue transfer (FTT) provides a versatile method to achieve successful lower limb salvage. Thrombocytosis in patients undergoing lower extremity (LE) FTT is associated with increased risk of complications. The aims of this study were to assess the feasibility of performing LE FTT in patients with preoperative thrombocytosis, and whether antiplatelet (AP) therapy on the day of surgery (DOS) affects outcomes. METHODS: A retrospective review of thrombocytotic patients who underwent LE FTT between 2011 and 2022 was performed. Patients were stratified into groups based on the receipt of AP therapy on the DOS. Patients were propensity score matched for comorbidity burden and postoperative risk stratification. Outcomes of interest included perioperative transfusion requirements, postoperative flap-related complications, rates of flap success, limb salvage, and ambulatory status. RESULTS: Of the 279 patients who underwent LE FTT, 65 (23.3%) were found to have preoperative thrombocytosis. Fifty-three patients remained following propensity score matching; of which, 32 (60.4%) received AP therapy on the DOS and 21 (39.6%) did not. Overall flap success rate was 96.2% (n = 51). The likelihoods of thrombosis and hematoma development were similar between cohorts (p = 0.949 and 0.574, respectively). Receipt of DOS AP therapy was associated an additional 2.77 units and 990.10 mL of transfused blood (p = 0.020 and 0.018, respectively). At a mean follow-up of 20.7 months, overall limb salvage and ambulatory rates were 81.1% (n = 43) and 79.2% (n = 42), respectively, with no differences between cohorts. CONCLUSION: Preoperative thrombocytosis is not an absolute contraindication to LE FTT. DOS AP therapy may be protective in comorbid patients with elevated platelet counts but must be weighed against possible short-term bleeding as suggested by significant increases in postoperative transfusion requirements.

New and Recurrent Ulcerations after Free Tissue Transfer with Partial Bony Resection in Chronic Foot Wounds within a Comorbid Population.

BACKGROUND: Chronic foot wounds often require bony resection; however, altering the tripod of the foot carries a risk of new ulcer development nearing 70%. Resulting defects often require free tissue transfer (FTT) reconstruction; outcomes data for various bony resection and FTT options may guide clinical decision-making regarding bone and soft-tissue management. The authors hypothesized that alteration of the bony tripod will increase risk of new lesion development after FTT reconstruction. METHODS: A single-center retrospective cohort analysis of patients undergoing FTT from 2011 through 2019 with bony resection and soft-tissue defects of the foot was performed. Data collected included demographics, comorbidities, wound locations, and FTT characteristics. Primary outcomes were recurrent lesion (RL) and new lesion (NL) development. Multivariate logistic regression and Cox hazards regression were used to produce adjusted odds ratios and hazard ratios. RESULTS: Sixty-four patients (mean age, 55.9 years) who underwent bony resection and FTT were included. Mean Charlson Comorbidity Index was 4.1 (SD 2.0), and median follow-up was 14.6 months (range, 7.5 to 34.6 months). Wounds developed after FTT in 42 (67.1%) (RL, 39.1%; NL, 40.6%). Median time to NL development was 3.7 months (range, 0.47 to 9.1 months). First-metatarsal defect (OR, 4.8; 95% CI, 1.5 to 15.7) and flap with cutaneous component (OR, 0.24; 95% CI, 0.07 to 0.8) increased and decreased odds of NL development, respectively. CONCLUSIONS: First-metatarsal defects significantly increase NL risk after FTT. The majority of ulcerations heal with minor procedures but require long-term follow-up. Soft-tissue reconstruction with FTT achieves success in the short term, but NL and RL occur at high rates in the months to years after initial healing. CLINICAL QUESTION/LEVEL OF EVIDENCE: Risk, III.

Postoperative Glycemic Response in High-Risk Type II Diabetics Receiving Below-Knee Amputation: Does Intraoperative Dexamethasone Make an Impact?

Despite known risks of hyperglycemia on postoperative complications, the influence of intraoperative dexamethasone on blood glucose has yet to be evaluated within the diabetic limb salvage population. This study aimed to assess the effect of intraoperative dexamethasone on postoperative blood glucose in diabetic patients undergoing atraumatic major lower extremity amputations. A single-center retrospective review of diabetic patients undergoing below-knee amputation between January 2017 and December 2022 was performed. Blood glucose levels for the 5 days before and after amputation were recorded and compared with the primary endpoints of postoperative hyperglycemia (>200 mg/dL) and glucose variability (>200 mg/dL). Cohorts were divided by patients who did and did not receive intraoperative administration of dexamethasone. Three hundred eighty-one were screened for eligibility with 180 patients included. Of these, 50 patients received dexamethasone intraoperatively (38.5%). Average pre- and postoperative blood glucose, rate of pre- and postoperative hyperglycemia, perioperative glucose variability, and postoperative dehiscence and infection were comparable between cohorts. On multivariate analysis, intraoperative administration of dexamethasone was not associated with postoperative hyperglycemia (p = .104) or perioperative blood glucose variability > 200 mg/dL (p = .334). Perioperative blood glucose variability > 200 mg/dL was associated with higher odds of surgical site infection (SSI) (odds ratio 5.12, p = .003). Administration of intravenous dexamethasone to diabetic patients undergoing below-knee amputation is not associated with postoperative hyperglycemia or complications. This study confirms previous findings that high glucose is a predictor of SSI. Concerted effort by a multidisciplinary team to attain tight glycemic control is critical to optimizing healing.

Surgical management of pain or infection secondary to calciphylaxis: a wound center's experience and algorithmic multidisciplinary approach.

BACKGROUND: The role of surgical management of calciphylaxis remains understudied. OBJECTIVE: This article reports a case series and algorithmic approach to the multidisciplinary management of calciphylaxis. METHODS: A single-center retrospective review of all adult patients with calciphylaxis treated surgically between January 2010 and November 2022 was performed. RESULTS: Eleven patients met inclusion criteria. The average age was 50.9 years ± 15.8 SD, and most patients were female (n = 7 [63.6%]). Surgery was indicated for infection (n = 6 [54.5%]) and/or intractable pain (n = 11 [100%]). Patients underwent an average of 2.9 excisional debridements during their hospital course. Following the final excision, wounds were left open in 5 cases (29.4%), closed primarily in 4 (23.5%), and local flaps were used in 3 (27.3%). Postoperatively, the mean time to healing was 57.4 days ± 12.6. Complications included dehiscence (n = 1 [9.1%]), progression to cellulitis (n = 2 [18.2%]), osteomyelitis (n = 1 [9.1%]), and lower extremity amputation (n = 2 [18.2%]). Of the 6 patients alive at the time of healing, 5 (83.3%) were no longer taking narcotic medications. At an average follow-up of 26.4 months ± 34.1, 7 patients (63.6%) were deceased, with an average time to mortality of 4.8 months ± 6.7. Of the 4 remaining patients, 3 (75.0%) were ambulatory by their most recent follow-up visit. CONCLUSION: While the morbidity and mortality associated with calciphylaxis are substantial, surgical excision is effective in reducing pain and improving quality of life in patients with this end-stage disease. Wound care centers are uniquely equipped with a variety of medical and surgical specialists with experience in treating chronic wounds and thus facilitate an efficient multidisciplinary model.

Retrospective review of complications and outcomes in COVID-19-positive patients with comorbidities undergoing limb salvage procedures in a tertiary care wound center.

INTRODUCTION: COVID-19 illness is associated with increased operative risks, ranging from delayed wound healing and coagulopathy to increased risk of mortality. OBJECTIVE: This article describes the authors' recent experience of the implications of COVID-19 on limb salvage procedures. MATERIALS AND METHODS: Patients who underwent LE limb salvage procedures within 30 days of a positive COVID-19 diagnosis were retrospectively reviewed. Patient demographics, comorbidities, surgical factors, postoperative complications, and management were collected. RESULTS: Of 597 patients screened from February 2020 to March 2022, a total of 67 (11.2%) were diagnosed with COVID-19, of which 17 received the diagnosis within 30 days of surgery and were thus included. Average follow-up was 43 ± 3.2 months, at which point 6 (35.3%) were fully healed. The mortality rate at the most recent follow-up visit was 29.4% of patients (n = 5). Two patients required admission to the SICU following index procedure, and 1 necessitated a return to the operating room. CONCLUSION: COVID-19 may negatively affect the wound healing process while increasing the mortality rate amongst patients with multiple or severe comorbidities undergoing limb salvage procedures. Medical providers need to be aware of the complexity of these patients and apply a multi-disciplinary protocol to obtain successful outcomes.

A Comparative Analysis of Functional and Patient-Reported Outcomes Following Lisfranc and Chopart Amputations in High-Risk Limb Salvage Patients.

Midfoot amputations provide an opportunity for limb salvage through preservation of a weightbearing limb. However, the longevity of midfoot amputations is threatened by restrictions in surface area and risks of skin breakdown. To better inform decisions surrounding the level of amputation, we sought to compare outcomes of high-risk individuals who underwent Lisfranc or Chopart amputations. A single-center retrospective cohort study was performed from November 2013 to September 2022 of adult patients who underwent Lisfranc or Chopart amputations. Patients were stratified into cohorts based on the amputation type. Outcomes included postoperative rates of re-amputation, functional status, mortality and patient-reported outcome measures in the form of Lower Extremity Functional Scale scores. Sixty-six patients were identified; of which, 45 underwent Lisfranc amputation, and 21 underwent Chopart amputation. Median Charlson Comorbidity Index was 7, signifying a substantial comorbidity burden. By median follow-up of 14 (Interquartile range: 28) months, 31 patients (36%) progressed to higher-level amputation, and most patients were ambulatory (n = 38, 58%). Overall rates of re-amputation, ambulatory status, and mortality were comparable between groups. Re-amputation to another midfoot amputation was more common among the Lisfranc cohort (n = 16, 36% vs n = 1, 5%), whereas re-amputation to BKA was more prevalent among the Chopart cohort (Chopart: n = 7, 33% vs Lisfranc: n = 7, 16%; p = .011). Average Lower Extremity Functional Scale scores were similar between groups and corresponded to a maximal function of 48%. Lisfranc and Chopart amputations have the potential to be efficacious limb salvage options in high-risk patient populations in conjunction with intraoperative biomechanical optimization and optimal preoperative patient selection.

The application of targeted muscle reinnervation in lower extremity amputations: A systematic review.

BACKGROUND: Targeted muscle reinnervation (TMR) is a promising surgical modality for reducing post-amputation pain. We sought to provide a succinct overview of TMR specific to the lower extremity (LE) amputation population. METHODS: A systematic review was performed per PRISMA guidelines. Ovid MEDLINE, PubMed, and Web of Science were queried for records using various combinations of Medical Subject Heading (MeSH) terms such as "LE "amputation," "below-knee amputation" (BKA), "above-knee amputation" (AKA), and "TMR." Primary outcomes included (1) operative techniques, (2) changes in neuroma, phantom limb pain (PLP), or residual limb pain (RLP), and (3) postoperative complications. Studies were only included if outcomes data were discretely provided for LE patients. RESULTS: Eleven articles examining 318 patients were identified. Average patient age was 47.5 ± 9.3 years, and most patients were male (n = 246, 77.4%). Eight manuscripts (72.7%) described TMR at the index amputation. The average number of nerve transfers performed per TMR case was 2.1 ± 0.8, and the most commonly employed nerve was the tibial (178/498; 35.7%). Nine (81.8%) articles incorporated patient-reported outcomes after TMR, with common methods including the Numerical Rating Scale (NRS) and questionnaires. Four studies (33.3%) reported functional outcomes such as ambulation ability and prosthesis tolerance. Complications were described in seven manuscripts (58.3%), with postoperative neuroma development being the most common (21/371; 7.2%). CONCLUSIONS: The application of TMR to LE amputations is effective in reducing PLP and RLP with limited complications. Continued investigations are warranted to better understand patient outcomes specific to anatomic location using validated patient-reported outcome measures (PROM).

Perioperative evaluation of nutritional status to predict complications in patients with major lower extremity amputation.

INTRODUCTION: Optimization of nutritional status is critical in postoperative wound healing. Perioperative Alb and pAlb levels have been used as proxies for overall nutritional status. OBJECTIVE: This study examines if such biomarkers correlate with postoperative complications after MLEA for chronic wounds. MATERIALS AND METHODS: A retrospective review of patients undergoing MLEA at a single institution from January 2017 through October 2021 was performed. Data collection included demographics, comorbidities, and perioperative laboratory values. The primary outcomes were surgical dehiscence, hematoma, and infection within 30 days of surgery. RESULTS: A total of 303 patients undergoing MLEA met the inclusion criteria. At the threshold of less than 3.2 g/dL for low Alb, no significance was found for any postoperative complications. The threshold of less than 10 mg/dL for low pAlb was associated with significantly increased infection rates. At the threshold of less than 9 mg/dL for low pAlb, hematoma and infection were significantly increased compared with the defined normal perioperative pAlb. Alternatively, low Alb (<3.2 g/dL) did not correlate with postoperative complications. CONCLUSIONS: Further investigation of validated biomarkers and their thresholds is needed to guide perioperative optimization of nutritional status after MLEA for chronic wounds.

Amputation Acceptance: A Survey of Factors Influencing the Decision to Undergo Lower Extremity Amputation.

Accepting to undergo amputation is an arduous process often fraught with confusion, fear, and uncertainty. To assess how to best facilitate discussions with at-risk patients, we surveyed lower extremity amputees about their experiences surrounding this decision-making process. Patients who underwent lower extremity amputation at our institution from October 2020 to October 2021 were asked to complete a 5-item telephone survey assessing their decision to undergo amputation and postoperative satisfaction. Retrospective chart review of respondent demographics, comorbidities, operative details, and complications was conducted. Of 89 lower extremity amputees identified, 41 (46.07%) responded to the survey, with the majority undergoing below-knee amputations (n = 34, 82.93%). At a mean follow-up of 5.90 ± 3.45 months, 20 patients (48.78%) were ambulatory. Surveys were completed at a mean of 7.74 ± 4.03 months since amputation. Factors that helped patients decide to undergo amputation included discussions with doctors (n = 32, 78.05%) and concern for worsening health (n = 19, 46.34%). Deteriorating ability to walk (n = 18, 45.00%) was the most common concern prior to surgery. Recommendations by survey respondents to ease the decision-making process included speaking with amputees (n = 9. 22.50%), more discussions with doctors (n = 8, 20.00%), and access to mental health and social services (n = 2, 5.00%); however, many had no recommendations (n = 19, 47.50%), and most were pleased with their decision to undergo amputation (n = 38, 92.68%). Despite most patients primarily citing satisfaction with their decision to undergo lower extremity amputation, it is critical to consider factors that affect patient decisions and recommendations to improve this decision-making process.

Presence of a patent pedal arch is the primary predictor of transmetatarsal amputation healing and limb salvage.

OBJECTIVE: Transmetatarsal amputation (TMA) is a durable and important functional limb salvage option. We have presented our results in identifying the angiographic predictors of TMA healing using single-institution retrospective data. METHODS: Consecutive patients within our institution who had undergone TMA and lower extremity arteriography from 2012 to 2020 were included. Patients whose TMA had healed were compared with those whose TMA had not healed. Using pre- and perioperative patient factors, in addition to the Global Limb Anatomic Staging System (GLASS) and evaluation of the tibial runoff vessels, multivariate analysis was used to define the predictors of TMA healing at 30 days and 1 year. For those patients who had undergone an intervention after TMA, including repeat interventions, the postintervention GLASS stage was calculated. All patients were followed up by the vascular surgeon using standard ultrasound surveillance and clinical examinations. Once the predictors had been identified, an analysis was performed to correlate the 30-day and 1-year limb salvage rates. RESULTS: A total of 89 patients had met the inclusion criteria for the study period. No difference was found in the GLASS femoropopliteal or infrapopliteal stages for those with a healed TMA and those without. After multivariate regression analysis, the presence of a patent pedal arch vs a nonintact arch had a 5.5 greater odds of TMA healing at 30 days but not at 1 year. Additionally, the presence of a patent arch was strongly associated with limb salvage at both 30 days (86% vs 49%; P < .01) and 1 year (79% vs 49%; P < .01). CONCLUSIONS: In the present series of patients who had undergone TMA and arteriography, with appropriate GLASS staging, we found patency of the pedal arch was a significant predictor of healing and limb salvage. The GLASS femoropopliteal and infrapopliteal stages did not predict for TMA healing.

A comparative analysis of fasciocutaneous versus muscle free flaps in peripheral vascular disease patients.

OBJECTIVE: Chronic lower extremity (LE) wounds are common in patients with peripheral vascular disease (PVD). Free tissue transfer (FTT) provides healthy soft tissue for wound coverage and additional blood supply to promote wound healing. Given previous studies demonstrate increased complications in LE fasciocutaneous flaps, it was hypothesized that low vascular resistance in muscle flaps may be more advantageous for wound healing in PVD patients. Therefore, this study compared outcomes in PVD patients undergoing LE reconstruction with fasciocutaneous versus muscle free flaps. METHODS: Retrospectively reviewed PVD patients undergoing FTT between 2011 and 2021. Patients were stratified into fasciocutaneous and muscle free flap groups. Primary outcomes included complications, flap success, post-reconstruction vascular interventions, limb salvage, and ambulatory status. RESULTS: One hundred thirteen patients with PVD were identified, of which 60.2% received fasciocutaneous (n = 68) and 39.8% received muscle flaps (n = 45). Forty-two patients (37.2%) underwent pre-flap endovascular interventions. Flap success rate was 98.2% (n = 111). Overall complication rate was 41.2% following fasciocutaneous flaps compared to 24.4% in muscle flaps (p = 0.067). Fasciocutaneous flaps had higher odds of ulceration requiring repeat angiogram within 1 year of reconstruction compared to muscle flaps (OR 3.4, 95% CI: 1.07-10.95, p = 0.047), and higher odds of requiring repeat angiogram overall (OR 3.4, 95% CI: 1.07-10.95, p = 0.047). No difference in requiring procedures in the operated limb within 1 year was observed (p = 0.155). At mean follow-up, there was no difference in limb salvage, ambulatory, and mortality rate between groups. CONCLUSION: This study demonstrates that fasciocutaneous flaps had higher postoperative complication rates and more commonly required repeat arteriograms following LE FTT reconstruction due to recurrent ulcerations, suggesting greater utility of muscle flaps for FTT reconstruction in PVD patients.

Composite Free Tissue Transfer for Reconstruction of Lower Extremity Tendon Injuries: A Systematic Review.

BACKGROUND: Tendon rupture with extensive soft tissue loss has few reconstructive options. Composite free tissue transfers including skin and tendon offer an attractive reconstructive approach. Unfortunately, most studies discussing them come from sparse case reports. We systematically assess evidence supporting composite flap use in single-stage reconstruction of lower extremity tendon and soft tissue defects. METHODS: A systematic review was performed in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. OvidMEDLINEqueried for records pertaining to the study question using Medical Subject Heading (MeSH) terms such as "lower extremity," "tendon," and "composite flap." No limitations were placed on the year of publication, country of origin, or study size. Study characteristics and patient demographics were collected. Primary outcomes included:(1) defect location, composite flap characteristics;(2) return to ambulation;(3) joint range of motion;(4) patient satisfaction, and (5) complications. RESULTS: In total, 29 articles examining 173 patients with lower extremity tendon defects and soft tissue loss were identified. Average age was 44.3 years (SD 17.5); most patients were male (n = 110, 66.3%). Achilles defect was mostly reported (n = 151, 86.8%), followed by patellar (n = 17, 9.8%) and other tendon defects (n = 6, 3.4%). Average tendon defect size was 8.4 cm (SD 4.0), average soft tissue loss was 80.2 cm2 (SD 40.0). Most employed composite flap was anterolateral thigh and fascia lata (ALT + FL) (n = 101, 58.0%). Most patients (n = 134, 99.3%) returned to ambulation in an average 123.1 days (SD 78.3). Average reconstructive joint degree of motion was 62.1 degrees compared with normal degree of motion 62.3 degrees. Patient-reported outcomes demonstrated increased satisfaction after reconstruction. CONCLUSION: Composite flaps effectively reconstruct a variety of tendon and soft tissue defects; the most reported flap is ALT + FL, which provides large flap territories and rapid healing in Achilles, patellar, and other tendon defects. In this review, patients with composite flaps demonstrated return to ambulation, minimal impairment in range of motion, and notable postoperative satisfaction.

Long-Term Outcomes in Patients With Peripheral Arterial Disease Who Undergo Free Flap Reconstruction for Chronic Lower Extremity Wounds.

BACKGROUND: Free tissue transfer (FTT) is critical for limb salvage of chronic lower extremity (LE) wounds. In patients with peripheral arterial disease (PAD), FTT LE reconstruction can be challenging due to limited vessel selection for anastomosis. The study aims to evaluate our surgical and functional outcomes after FTT to LE in patients with PAD. METHODS: A retrospective review identified patients who underwent LE free flap reconstruction between 2011 and 2021. All patients underwent preoperative arteriogram and subsequent FTT. Patients were classified into PAD or non-PAD cohorts, based on the presence of LE arterial stenoses or occlusions identified on arteriogram. Primary outcomes included complications, flap success, need for post-FTT vascular reintervention, limb salvage, and ambulatory status. RESULTS: A total of 253 patients underwent FTT to LE, with 84 patients (33.2%) in the PAD cohort. Patients with PAD had a higher prevalence of diabetes (83.3% vs 39.1%, P < 0.001) and end-stage renal disease (8.3% vs 2.4%, P = 0.028). Osteomyelitis was more common in the PAD group (73.8% vs 55.0%, P = 0.004). Free tissue transfer donor sites and flap composition were similar between cohorts. At a mean follow-up of 21.1 months, limb salvage rates were similar between non-PAD and PAD cohorts (90.5% vs 84.5%, P = 0.158), with no significant differences in ambulatory status or mortality. Higher complication rates occurred in the PAD cohort (38.1% vs 20.7%, P = 0.003), of which partial flap necrosis was more prevalent in the PAD group (6.0% vs 0.6%, P = 0.016). There was no difference in flap success rates between groups (P = 0.430). More postflap angiograms were performed in the PAD group (29.8% vs 7.1%, P < 0.001), with repeat percutaneous endovascular intervention performed in 68.0% of the PAD group versus 33.3% of the non-PAD group (P < 0.001). CONCLUSIONS: This is the largest study to demonstrate excellent long-term limb salvage outcomes in patients with PAD who undergo FTT to LE. Percutaneous endovascular intervention and FTT are effective methods to achieve limb salvage in vasculopathic patients with chronic LE wounds.

Neither Antiplatelet nor Anticoagulant Therapy Increases Graft Failure after Split-thickness Skin Grafting.

Split-thickness skin grafts (STSG) are an effective modality for lower extremity wound coverage. Many patients in the highly comorbid chronic wound population present with cardiovascular disease requiring chronic antiplatelet or anticoagulant therapy, theoretically increasing risk for bleeding complications, donor site morbidity, and poor graft take. Some surgeons advocate temporary cessation of antithrombotic therapy, which may increase cardiovascular risk. The objective of this study was to examine the effects of anticoagulation use on STSG outcomes. Methods: All patients receiving STSGs for lower extremity wounds from 2014 to 2016 at a single institution were retrospectively reviewed. Successful grafts were defined as greater than 99.5% wound coverage. Patients were divided into two groups: anticoagulation/antiplatelet or no anticoagulation/antiplatelet. Continuous variables were described by means and SDs and analyzed using student's t-test. Categorical variables were described by frequencies and percentages and analyzed using Chi-square or Fisher exact tests as appropriate. Results: In total, 231 wounds were identified among 189 patients; 124 patients were receiving at least one antiplatelet/anticoagulant at time of grafting. Three hematomas were reported during 30 days of follow-up; there was no significant difference between groups (P > 0.05). Anticoagulation/antiplatelet therapy in the perioperative period had no significant impact on STSG take and overall healing. Conclusions: The findings from this study demonstrate that administration of anticoagulant/antiplatelet agents in the perioperative period does not increase the risk of skin graft failure. Based on these findings, STSG can be performed without cessation of anticoagulation or antiplatelet therapy.