Phalangeal fractures: A retrospective comparison of open reduction and internal fixation vs. closed reduction and percutaneous pinning.

The treatment of phalangeal fractures is guided by fracture characteristics, patient factors and surgeon judgment. This study retrospectively compares characteristics of phalangeal fractures treated with closed reduction percutaneous pinning (CRPP) with those of fractures treated with open reduction internal fixation (ORIF) to identify risk factors associated with reoperation. A total of 901 phalangeal fractures were included and treated operatively by either CRPP (748 fractures, 83 â€‹%) or ORIF (153 fractures, 17 â€‹%). Demographics, surgical management, and complication data were collected. Statistical analyses were performed to stratify risk associations and identify potential predictors of reoperation. With multivariate analysis and bootstrapped LASSO regression, fractures addressed by means of ORIF (vs. CRPP), work-related fractures, and open fractures were found to be independently associated with reoperation. These findings can be used to guide patient selection, surgical planning and timing of fracture repair. Level of evidence: Level III, Therapeutic.

Readability, Understandability, Usability, and Cultural Sensitivity of Online Patient Educational Materials (PEMs) for Lower Extremity Reconstruction: A Cross-Sectional Study.

Background: Lower extremity reconstructive surgery is an evolving field wherein patients rely on accessible online materials to engage with their perioperative care. This study furthers existing research in this area by evaluating the readability, understandability, actionability, and cultural sensitivity of online health materials for lower extremity reconstruction. Methods: We identified the 10 first-appearing, educational sites found by searching the phrases "leg saving surgery", "limb salvage surgery," and "leg reconstruction surgery". Readability analysis was conducted with validated tools, including Simple Measure of Gobbledygook (SMOG). Understandability and actionability were assessed with Patient Education and Materials Assessment Tool (PEMAT), while cultural sensitivity was measured with Cultural Sensitivity Assessment Tool (CSAT). A Cohen's κ value was calculated (PEMAT and CSAT analyses) for inter-rater agreement. Results: The mean SMOG reading level for websites was 13.12 (college-freshman reading level). The mean PEMAT understandability score was 61.8% and actionability score was 26.0% (κ = 0.8022), both below the 70% acceptability threshold. The mean CSAT score was 2.6 (κ = 0.73), exceeding the 2.5 threshold for cultural appropriateness. Conclusion: Online PEM for lower extremity reconstruction continue to fall below standards of readability, understandability, and actionability; however, they meet standards of cultural appropriateness. As patients rely on these materials, creators can use validated tools and positive examples from existing PEM for greater patient accessibility.

Contexte : La chirurgie reconstructrice du membre inférieur est un domaine en pleine évolution où les patients s'appuient sur des documents en ligne afin de se lancer dans leurs soins périopératoires. Cette étude est la prolongation d'une recherche existante dans ce domaine pour évaluer la lisibilité, l'intelligibilité, la mise en pratique et la sensibilité culturelle des documents de santé disponibles en ligne pour la reconstruction du membre inférieur. Méthodes : Nous avons identifié 10 sites éducatifs d'apparition récente en faisant une recherche avec les mots « chirurgie de sauvetage de la jambe ¼, « chirurgie de sauvetage d'un membre ¼ et « chirurgie reconstructrice de la jambe ¼. Une analyse de lisibilité a été effectuée avec des outils validés dont Simple Measure of Gobbledygook (SMOG). L'intelligibilité et la mise en pratique ont été évaluées avec PEMAT, tandis que la sensibilité culturelle était mesurée avec le CSAT (outil d'évaluation et de sensibilité culturelle). La valeur k de Cohen a été calculée pour les analyses avec le PEMAT et le CSAT, pour la concordance interévaluateurs. Résultats : Le niveau de lisibilité moyen avec le SMOG pour les sites Web était de 13.12 (niveau de lecture d'entrée au collège). Le score moyen d'intelligibilité (PEMAT) était de 61.8% et le score de mise en pratique était de 26.0% (kappa = 0,8022), tous les deux en dessous du score d'acceptabilité de 70%. Le score CSAT moyen était de 2.6 (kappa = 0,73), dépassant le seuil de 2.5. Conclusion : Les documents éducatifs pour patients sur la reconstruction du membre inférieur restent en dessous des normes de lisibilité, d'intelligibilité et de mise en action. En revanche, ils satisfont les normes de respect de la culture. Considérant que les patients s'appuient sur ces documents, leurs créateurs peuvent utiliser des outils validés et des exemples positifs issus de documents existants pour une plus grande accessibilité par les patients.

Impact and Implementation of Plastic Surgery Interest Groups: National Survey of Plastic Surgery Interest Group Leadership.

Background: Plastic surgery interest groups (PSIGs) provide an invaluable opportunity to enhance medical students' exposure to and knowledge of plastic surgery. Despite this, there have been no studies that provide information on the formation of these groups as well as the aspects that make for a productive PSIG. Methods: An anonymous survey was distributed by email via RedCAP to US medical students who hold leadership positions within their medical school's PSIG. Participants were asked baseline medical school information, the structure of their interest group, and perspectives on the most impactful and challenging components of their interest group. Results: Sixteen members (27.6%) of PSIG leadership completed the survey. Eighty percent reported having a membership of greater than 20 students. Fifty percent of the PSIGs were led by advisors who were medical school or hospital-affiliated faculty. Sixty-nine percent of groups were allocated a predetermined amount of money to fund activities and events throughout the academic year. Based on member feedback, groups reported that interactions with plastic surgery faculty, mentorship opportunities, and research opportunities were the most impactful and beneficial components of their PSIG. Forty-four percent reported that the biggest challenge faced by their PSIG was having a small active member group, followed by a lack of funding. Conclusion: Our study provides an in-depth look at the current structure and impact of PSIGs in the United States. It also provides a framework for medical schools that wish to start a PSIG and suggestions for established groups who wish to revitalize their PSIG structure.

Contexte: Les groupes d'intérêt en chirurgie plastique (GICP) offrent la possibilité inestimable d'améliorer l'exposition et les connaissances des étudiants envers la chirurgie plastique. Malgré cela, il n'y a pas eu d'études apportant d'information sur la formation de ces groupes ainsi que sur les éléments qui font qu'un GICP soit productif. Methodes: Une enquête anonyme a été distribuée par courriel via RedCAP aux étudiants en médecine des États-Unis qui ont un rôle de leadership au sein du GICP de leur école de médecine. Les questions posées aux participants incluaient des demandes d'information basique sur l'école de médecine, la structure de leur groupe d'intérêt et des points de vue sur les éléments de leur groupe d'intérêt les plus stimulants et ceux ayant le plus d'impact. Résultats: Seize membres (27.6%) du leadership de GICP ont répondu à l'enquête. Quatre-vingts pour cent ont déclaré avoir plus de 20 étudiants adhérents. Cinquante pour cent des GICP étaient menés par des conseillers qui étaient des enseignants de l'école de médecine ou affiliés à un hôpital. Soixante-neuf pour cent des groupes recevaient des sommes prédéterminées pour financer leurs activités et événements tout au long de l'année universitaire. En fonction du retour d'informations des membres, les groupes ont déclaré que les interactions avec les enseignants en chirurgie plastique, des occasions de mentorat et des possibilités de recherchez étaient les éléments les plus bénéfiques et ayant le plus d'impact de leur CGIP. Quarante-quatre pour cent que le plus grand défi de leur CGIP était d'abord d'avoir un petit groupe de membres actifs, et ensuite de manquer de financement. Conclusion: Notre étude procure un regard approfondi sur la structure actuelle et l'impact des CGIP aux États-Unis. Elle fournit aussi un cadre pour les facultés de médecine qui souhaitent lancer un CGIP et des suggestions pour les groupes établis qui souhaitent revitaliser la structure de leur CGIP.

In the Age of Social Media, How Does the Public Choose a Plastic Surgeon? A Crowdsourcing Analysis of Major Deciding Factors.

BACKGROUND: Patients consider many factors when selecting a plastic surgeon. Previous studies have demonstrated the importance of board certification and reputation in this decision. Despite this, there is a paucity of knowledge on the role that cost of procedure, social media, and surgeon training have on the decision-making process. METHODS: The authors' study used a population-based survey administered by Amazon Mechanical Turk. Adults 18 years and older and residing in the United States were asked to rank the importance of 36 factors from 0 (least important) to 10 (most important) when selecting a plastic surgeon. RESULTS: A total of 369 responses were analyzed. The mean age of respondents was 36.9 years (SD, 10.9 years), and 174 participants (47.2%) were female. Of those surveyed, 216 (55.0%) had previously undergone plastic surgery, and all respondents were considering plastic surgery either at the time of survey or in the future. The most common first step for respondents in identifying a plastic surgeon was a web-based search (32.2%). The top three most important factors in selecting a plastic surgeon were surgeon's experience with the desired procedure (7.48), surgeon's board certification (7.38), and surgeon's years in practice (7.36). The three least important factors were the surgeon's race (5.43), number of social media posts (5.62), and television appearances (5.64). CONCLUSIONS: The authors' survey provides insight into the role that different elements play in the decision of selecting a plastic surgeon in the United States. Understanding how patients select a plastic surgeon can help surgeons optimize these elements in their practices.

Posttraumatic Penile Replantation with Minimal Skin Necrosis.

Penile amputation is a surgical emergency where practical and timely perioperative management is crucial for ensuring a successful outcome. Tenuous viability of penile and scrotal skin has been well described in the literature, with a putative mechanism attributed to the transection of distal branches of the external pudendal artery. Although the perforasomes critical to penile replantation have been debated, this case report details a patient who successfully recovered sensation and function with minimal necrosis after penile replantation. Surgically, this was facilitated by intentional drain placement, aggressive debridement beyond the zone of injury, and planned redundancies with dorsal artery/vein anastomoses via interposition grafts of the dorsal penile vessels alone.

Trends of Autologous Free-Flap Breast Reconstruction and Safety during the Coronavirus Disease 2019 Pandemic.

BACKGROUND: Autologous free-flap breast reconstruction (ABR) is a valuable surgical option for patients following mastectomy. The coronavirus disease 2019 (COVID-19) pandemic has led to a myriad of factors that have affected access to care, hospital logistics, and postoperative outcomes. This study aims to identify differences in patient selection, hospital course and severity, and postoperative outcomes for patients who underwent ABR during and prior to the COVID-19 pandemic. METHODS: Patients undergoing ABR from the American College of Surgeons National Surgical Quality Improvement Program 2019 to 2020 database were analyzed to compare sociodemographics, hospital course, and outcomes over the first postoperative month. Multivariable logistic regression was used to identify factors predictive of complications based on the operative year. RESULTS: In total, 3,770 breast free flaps were stratified into two groups based on the timing of reconstruction (prepandemic and pandemic groups). Patients with a diagnosis of disseminated cancer were significantly less likely to undergo ABR during the COVID-19 pandemic. On univariate analysis, there were no significant differences in postoperative complications between the two groups. When controlling for potentially confounding sociodemographic and clinical risk factors, the COVID-19 group was significantly more likely to undergo reoperation compared with the prepandemic group (p < 0.05). CONCLUSION: When comparing outcomes for patients who underwent ABR prior to and during the COVID-19 pandemic, we found a significant increase in the odds of reoperation for those who had ABR during the pandemic. Debridement procedures and exploration for postoperative hemorrhage, thrombosis, or infection increased in the prepandemic group compared to the COVID-19 group. Notably, operative times decreased.

Perspectives on the Plastic Surgery Common Application (PSCA): A Survey of 2021-2022 Integrated Plastic Surgery Applicants.

The Plastic Surgery Common Application (PSCA) was introduced as a free and specialty-specific application for plastic surgery applicants in the 2020-2021 cycle. Now in its second year, the PSCA is being piloted by all integrated residency programs with future plans to replace Electronic Residency Application Service (ERAS) in the 2022-2023 cycle. This study aimed to explore applicant perspectives related to the PSCA and ERAS applications. Methods: An anonymous survey was distributed to integrated plastic surgery residency applicants from the 2021-2022 application cycle. Participants were asked to provide basic demographic information, their perspectives of the PSCA, and overall application preference. Results: One hundred forty (43.1%) applicants completed the survey. Nearly, 63% of applicants responded "slightly well" or "not well at all" regarding their ability to highlight at least one aspect of their application. Forty-one percent of applicants believed ERAS best highlighted the strengths of their application compared with 27% who believed their strengths were better highlighted by the PSCA. Seventy-nine percent reported the cost savings associated with the PSCA were "very" or "extremely important." Overall, 63% of respondents reported a preference to apply with the PSCA alone. Conclusions: This is the first study to provide insight on applicants' perspectives of the PSCA. Although the majority preferred applying with the PSCA, there may be challenges with transitioning to this application solely. Future iterations of the PSCA may aim to ameliorate functionality concerns, optimize application content, and incorporate plastic surgery-specific information that may be important to selection committees.

Epidemiology and Fracture Patterns of Traumatic Phalangeal Fractures.

Background: Despite the relatively high incidence of phalangeal fractures, there is an imperfect understanding of the epidemiology and anatomical distribution of these fractures. This study describes the patient characteristics, anatomic distribution, and detailed fracture patterns of phalangeal fractures among a large adult cohort in the United States. Methods: A retrospective study was performed among patients with phalangeal fractures in the United States between January 2010 and January 2015. Included patients were 18 years old or older and had a diagnosis of a phalangeal fracture. A total of 2140 phalangeal fractures in 1747 patients were included, and a manual chart review was performed to collect epidemiological and radiographic information. Fractures were classified based on location and fracture pattern. Results: The median age at the time of injury was 45 years (interquartile range, 30-57), and 65% of patients were men. The small finger had the highest incidence of fractures (26%) followed by the ring finger (24%). Distal and proximal phalanges demonstrated the highest incidence of fractures at 39% each. The dominant hand was affected in 44% of cases. Eighteen percent of fractures were due to a work-related trauma mechanism, and the most common mechanism of injury was blunt trauma (46%). Conclusion: This study provides a detailed overview of the anatomic distribution and fracture patterns of phalangeal fractures in an adult US population and, thus, may aid hand surgeons treating these injuries.

Public Confidence for Undergoing Elective Plastic Surgery Procedures during the COVID-19 Pandemic.

Background: The COVID-19 vaccine rollout has since been followed by a gradual resumption of elective surgery. Many individuals remain cautious about visiting a hospital or clinic to undergo surgery. As plastic surgeons are starting to resume elective surgery at this time, it is important to understand the perspectives of potential patients and the concerns they may have. Methods: A survey was distributed to participants in the United States through Amazon's Mechanical Turk (mTurk) during March of 2021. Participants were surveyed regarding their views on the severity of COVID-19, vaccination status, and how much COVID-19 has affected their interest in undergoing surgery. Results: Thirty-nine percent of respondents were either no longer willing or less willing to undergo elective plastic surgery. Seventy-three percent of respondents felt comfortable going to an office for a consultation. With regards to feeling comfortable visiting a hospital, 43.4% reported they would feel safe, 36% felt they would feel safe only if they could be discharged on the same day, and 30.6% reported not feeling safe. Fifty-two percent of respondents reported feeling comfortable undergoing surgery now or within the next year. Respondents who do not think COVID-19 is still a major health issue were more likely to still want plastic surgery. Conclusion: The results of this study highlight that the majority of patients, regardless of vaccination status, currently feel comfortable undergoing elective plastic surgery, particularly in an office setting. Plastic surgeons may expect to see a return in demand for elective procedures in the coming months.

Phalangeal Fractures Requiring Vascular Reconstruction: Epidemiology and Factors Predictive of Reoperation.

BACKGROUND: Demographic information related to phalangeal fractures that undergo simultaneous vascular repair, as well as their complication and reoperation profiles, remain incompletely understood. This study aimed to examine the patient and fracture characteristics influencing the outcomes after these injuries in a large Unites States adult patient cohort and to identify risk factors associated with unplanned reoperation of these fractures. METHODS: A retrospective study was performed, identifying 54 phalangeal fractures in 48 patients; all fractures were also associated with vascular injuries requiring repair. Patients with digital amputations were excluded. A manual chart review was performed to collect epidemiologic, radiographic, and surgical outcome information. RESULTS: The incidence of phalangeal fractures undergoing vascular repair was higher in the non-dominant hand, middle finger, proximal phalanx, and phalangeal shaft. Most (52.9%) fractures were due to occupational injury, with the most common mechanism being sharp injuries. More than half of the fractures had a nerve injury, and 13% required a vein graft for vascular repair. More than half of the fractures required at least one reoperation, most commonly due to "stiffness/tendon adhesion" (50%) and "nonunion or delayed union" (21.4%). In multivariable analysis, thumb (odds ratio [OR]: 35.1, P = .043) and index (OR: 14.0, P = .048) fingers' fractures were found to be independently associated with unplanned reoperation. CONCLUSIONS: Phalangeal fractures requiring vascular repair occurred most often in the occupational setting and more than 50% required at least one unplanned reoperation. Injuries sustained in the thumb and index finger were more likely to undergo unplanned reoperation, which may guide initial treatment decision-making and postoperative follow-up.

Gaps in Practice Management Skills After Training: A Qualitative Needs Assessment of Early Career Surgeons.

PURPOSE: Shifts in American healthcare delivery mechanisms pose significant hurdles to new physicians. Surgeons are particularly susceptible to these changes, but surgical residency educational efforts primarily focus on technical and clinical training to the exclusion of business and management practices. This study conducted a needs assessment of perceived gaps in practice management skills among early career surgeons to guide future training curricula. METHODS: This study was an exploratory qualitative study following the Consolidated Criteria for Reporting Qualitative Research. Purposive sampling was used to identify early career (<5 years following fellowship completion) surgeons across the United States. A semi-structured interview guide was created from interviews with surgical administrators and physician administrative curricula. Transcripts were de-identified and analyzed using a constructivist grounded theory approach. RESULTS: Ten surgeons from 6 specialties and 6 institutions were interviewed along with 3 surgeon administrators. Three major domains of need were identified: (1) fundamentals of procedural coding, clinical billing, & compliance, (2) finding/building a practice, and (3) navigating organizational challenges. First, surgeons thought trainees would benefit from a better understanding of reimbursement schema and the basics of health policy. They also thought that more exposure to malpractice litigation, especially for handling case review or expert witness requests, would be helpful for discerning how to handle such issues early in their career. In addition, early career surgeons expressed a desire to have dedicated mentorship time, a primer on evaluating job offers with simulated contract negotiation, and guidance regarding administrative roles. Finally, surgeons requested training in change management techniques, care pathway construction, and the basics of staffing decisions. CONCLUSIONS: There are significant practice management gaps in surgical training which may be amenable to targeted educational efforts during a residency or fellowship program. Future research will test the generalizability of these findings as well as build curricula that adequately meet these needs.

A national analysis of outpatient mastectomy and breast reconstruction trends from 2013 through 2019.

BACKGROUND: Traditionally, patients with breast reconstruction (BR) were hospitalized at least one day postoperatively. However, new trends suggest that outpatient surgery is a viable and safe alternative. This study aims to assess trends among patients with breast cancer who underwent outpatient mastectomy alone, with immediate BR (IBR) or delayed BR (DBR). METHODS: A retrospective analysis of the 2013-2019 ACS NSQIP® database was conducted. All women who underwent outpatient mastectomy were included in this study. The cohort was divided as follows: (1) mastectomy without BR, (2) IBR, and (3) DBR. A Cochran-Armitage test and adjusted multivariable logistic regression models were performed to evaluate linear trends over time within groups, and overall and pairwise comparisons between groups across the years, respectively. RESULTS: A total of 84,954 women were included in this study. Overall, 54.9%, 16.2%, and 28.9% underwent mastectomy without BR, IBR, and DBR, respectively. From the BR groups, the majority had implant placement. A significant difference in incidence trends between the three groups was evidenced over time (p<0.001). The greatest increase was evidenced in the IBR group and the lowest in the mastectomy without BR group. CONCLUSION: In this cohort of patients, a significant difference in linear trends was evidenced over time within and between the three groups. Our results suggest that outpatient IBR procedures are increasing in a greater proportion compared to other surgical approaches. Further studies are required to better characterize this population and comprehend the decision-making process toward a surgical procedure within each of the three groups.

A Critical Assessment of the Transgender Health Care Workforce in the United States and the Capacity to Deliver Gender-Affirming Bottom Surgery.

BACKGROUND: Gender-affirming surgery is a critical component of transgender health care, but access information is limited. The study aim was to assess workforce capacity to perform gender affirming bottom surgeries (GABSs) in the United States. METHODS: A questionnaire was administered via email, phone call, or fax from February to May 2020 to 86 practices identified as performing GABS by searching 10 Web-based databases with standardized keywords. Questions assessed training capacity, surgical capacity, and surgeon experience. RESULTS: Thirty-two of 86 practices responded, 20 met the inclusion criteria. Practices were identified in 15 states, with an average 2.4 (SD, 1.3) surgeons performing GABS per year. States with the greatest number of total providers offering GABS were Illinois (n = 21), Texas (n = 10), and Massachusetts (n = 13). No significant correlation between number of GABS types offered and geographic population density (r = -0.40, P = 0.08), or between number of providers and geographic population density (r = 0.19, P = 0.44). Vaginoplasty was most frequently performed, with the longest waitlists and highest number of waitlist additions per month. Phalloplasty was the second most common procedure, and waitlist additions per month exceeded provider capacity to perform the procedure. Most surgeons performing GABS were plastic surgeons and urologists, whereas obstetricians/gynecologists performed the majority of hysterectomies. CONCLUSIONS: This study demonstrated a shortage of providers with requisite training and experience to provide GABS. Although more robust studies are needed to better characterize the relationship between the number of patients seeking GABS and available providers, these findings indicate a need for improved training.

Reflections on a Career in Plastic Surgery: A National Survey of Retired Surgeons.

Introduction: Retired plastic surgeons can provide valuable insights for the greater plastic surgery community. The purpose of this study was to gather demographics, personal reflections, and advice for a career in plastic surgery from retired American plastic surgeons. Methods: An email survey was distributed to 825 members of the American Society of Plastic Surgeons during September 2021. The survey distribution was designed to engage members of the plastic surgery community, who were retired from surgical practice in the United States. The form consisted of 29 questions, five of which were free response. Descriptive statistical analyses were performed. Results: A total of 214 completed surveys were received, with a response rate of 25.9%. The average age at retirement was 67.6 years. The majority of respondents were men (87.6%) and White (93.3%); 46.9% of surgeons practiced at individual private practice. Ninety percent of surgeons indicated that they would choose to practice as a plastic surgeon again. Free responses provided positive career reflections and advice for young plastic surgeons regarding navigating the changing landscape of healthcare. Conclusions: Retired plastic surgeons are interested in engaging with the plastic surgery community and demonstrate continued interest in the future of the field. Efforts can be made to avail the field of their expertise and experience.

Safety of DIEP Flap Reconstruction in Patients with Factor V Leiden: A Retrospective Cohort Study.

Background: Factor V Leiden (FVL) is the most common inherited thrombophilia in White people. Thrombotic complications resulting from free flap breast reconstruction in FVL patients have been studied to a limited degree. We evaluated whether patients heterozygous for a FVL mutation undergoing deep inferior epigastric perforator flap reconstruction had increased risk of micro- or macrovascular thrombotic complications compared with patients without a diagnosed thrombophilia. Methods: We performed a retrospective cohort study of deep inferior epigastric perforator flap reconstructions at Brigham and Women's Hospital (1/2015-12/2020) comparing patients diagnosed as FVL heterozygotes compared with matched controls without a diagnosed thrombophilia. Patients were matched using coarsened exact matching algorithm based on clinical characteristics. The primary outcomes were micro- (return to OR for flap compromise, flap loss) and macrovascular (venous thromboembolism) complications. Results: A total of 506 patients (812 flaps) were included in this study. Eleven patients (17 flaps) were FVL heterozygotes. After matching, 10 patients (16 flaps) with FVL were matched to 55 patients (94 flaps). The return to OR for flap compromise was 0% in the FVL cohort compared with 5% (n = 5/94, 3/94 flaps lost, P = 1.00) in the matched controls (1.9%, n = 15/795 in unmatched controls, 0.6%, n = 5/795 loss rate). There were zero venous thromboembolism events among FVL patients compared with 2% of controls (n = 1/55). Conclusions: FVL heterozygosity did not increase the risk of micro- or macrovascular complications in patients undergoing deep inferior epigastric perforator flap breast reconstruction. This study supports the safety of microvascular reconstruction in this group of patients when appropriate venous thromboembolism prophylaxis is given.

Comparison of Acellular Solutions for Ex-situ Perfusion of Amputated Limbs.

INTRODUCTION: Hypothermic ex-situ machine perfusion (MP) has been shown to be a promising alternative to static cold storage (SCS) for preservation of solid organs for transplantation and vascularized composite allotransplantation. Perfusion with blood-based perfusion solutions in austere environments is problematic due to their need for appropriate storage and short shelf life, making it impractical for military and emergency use. Acellular perfusion has been shown to be effective, but the ideal perfusate solution for MP of amputated limbs is yet to be determined. The purpose of this study is to evaluate the efficacy of alternative perfusate solutions, such as dextran-enriched Phoxilium, Steen, and Phoxilium in ex-vivo hypothermic MP of amputated limbs in a porcine model. MATERIALS AND METHODS: Amputated forelimbs from Yorkshire pigs (n = 8) were preserved either in SCS (n = 2) at 4°C for 12 hours or machine-perfused at 10°C for 12 hours with oxygenated perfusion solutions (n = 6) at a constant flow rate. The perfusates used include modified Steen-solution, Phoxilium (PHOX), or Phoxilium enriched with dextran-40 (PHODEX). The perfusate was exchanged after 1 and 6 hours of perfusion. Machine data were recorded continuously. Perfusate samples for clinical chemistry, blood gas analysis, and muscle biopsies were procured at specific timepoints and subsequently analyzed. In this semi in-vivo study, limb replantation has not been performed. RESULTS: After amputation, every limb was successfully transferred and connected to our perfusion device. The mean total ischemia time was 77.5 ± 5.24 minutes. The temperature of the perfusion solution was maintained at 10.18 ± 2.01°C, and perfusion pressure at 24.48 ± 10.72 mmHg. Limb weight increased by 3% in the SCS group, 36% in the PHODEX group, 25% in the Steen group, and 58% in the PHOX group after 12 hours. This increase was significant in the PHOX group compared with the SCS group. All perfusion groups showed a pressure increase of 10.99 mmHg over time due to edema. The levels of HIF-1a decreased over time in all groups except the Steen and the PHODEX group. The biomarkers of muscle injury in the perfusate samples, such as creatine kinase and lactate-dehydrogenase, showed a significant difference between groups, with highest values in the PHODEX group. No significant differences were found in the results of the blood gas analysis. CONCLUSION: With the exception of significantly higher levels of creatine kinase and lactate dehydrogenase, MP with dextran-enriched Phoxilium provides similar results as that of the commercially available perfusates such as Steen, without the need for cold storage, and at circa 5% of the cost of the Steen solution. Further large-scale replantation studies are necessary to evaluate the efficacy of dextran-enriched Phoxilium as an alternate perfusate solution.

Hypothermic Ex Situ Perfusion of Human Limbs With Acellular Solution for 24 Hours.

BACKGROUND: Machine perfusion (MP) has evolved as a promising approach for the ex situ preservation in organ transplantation. However, the literature on the use of MP in human vascularized composite allografts is scarce. The aim of this study was to evaluate the effects of hypothermic MP with an acellular perfusate in human upper extremities and compare with the current gold standard of static cold storage (SCS). METHODS: Six upper extremities were assigned to either MP (n = 3) or SCS (n = 3) conditions for 24 h. MP-extremities were perfused with oxygenated Steen solution at a constant pressure of 30 mm Hg and 10°C. RESULTS: Median total ischemia time was 213 min (range, 127-222 min). Myoglobin, creatine-kinase (CK) showed increased levels at the start of MP (medians: myoglobin: 4377 ng/mL, CK: 1442 U/L), peaking 6 h after perfusate exchange (medians: myoglobin: 9206 ng/mL, CK: 3995 U/L) at timepoint 24. Lactate levels decreased from a median of 6.9-2.8 mmol/L over time. Expression of hypoxia-inducible factor 1-alpha peaked in the SCS-group after 8 h, followed by a decrease. Increased hypoxia-inducible factor 1-alpha expression in the MP group was delayed until 20 h. Perfusion pressure, temperature, and circuit flow were maintained at median of 30.88 mm Hg, 9.77°C, and 31.13 mL/min, respectively. Weight increased 1.4% in the SCS group and 4.3% in the MP group over 24 h. CONCLUSIONS: Hypothermic ex situ perfusion with an oxygenated acellular Steen solution may extend the allowable extracorporeal preservation time by a factor of 4-6 compared to SCS and holds promise to be beneficial for vascularized composite allograft recipients and victims of traumatic major limb amputation.

Staged Abbe-Rhinoplasty Technique to Correct Bilateral Cleft Deformity.

The mature bilateral cleft nasolabial deformity exhibits prolabial and vermilion deficiency, a broad depressed nasal tip, and short columella. Many strategies attempt to correct these stigmata, with varying degrees of success. The purpose of this communication is to describe a novel sequenced approach, staging an Abbe flap and rhinoplasty, with morphometric analysis of results. CLINICAL QUESTION/LEVEL OF EVIDENCE:: Therapeutic, IV.