Publications by authors named "Lawrence Scott Levin"

Purpose: Despite modern advancements in the treatment of late stages of wrist joint degeneration, few reliable options exist for patients requiring motion-preserving reconstruction of their radiocarpal and midcarpal joints. Vascularized composite allotransplantation (VCA) could be considered an option for wrist reconstruction in the future. The goal of this study was to describe the relevant anatomy and design a potential surgical technique for wrist VCA.

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Free flap surgery for limb salvage has become the surgical standard for reconstruction of bone and soft tissue with success rates and flap survivals of 94%-95%. The soft tissue defect dictates the technique of coverage. In many cases, multiple techniques of soft tissue coverage are necessary, ranging from myocutaneous and fasciocutaneous free flaps to split-thickness skin grafts (STSGs).

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Background: Neuroma-induced neuropathic pain is associated with loss of function and reduced quality of life. No consistently effective standard-of-care treatment has been defined. Neurocap, a bioresorbable nerve capping device, has been designed to isolate the nerve stump from surrounding tissues to reduce development of symptomatic end-neuromas.

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Osteoarthritis (OA) is a widespread joint disease for which there are no disease-modifying treatments. Previously, we found that mice with cartilage-specific epidermal growth factor receptor (EGFR) deficiency developed accelerated knee OA. To test whether the EGFR pathway can be targeted as a potential OA therapy, we constructed two cartilage-specific EGFR overactivation models in mice by overexpressing heparin binding EGF-like growth factor (HBEGF), an EGFR ligand.

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Case: A 20-year-old man with congenital arthrogryposis presented for evaluation of biceps dysfunction. Although his left elbow was supple with 0° to 110° passive range of motion (ROM), he had no active ROM and was unable to perform basic activities of daily living such as bringing his hand to his mouth to feed himself. A bipolar latissimus transfer was performed to achieve functional active ROM.

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Background:  Immunosuppression risks are a major concern with vascularized composite allotransplantation (VCA). As an emerging strategy, the antirejection role played by mesenchymal stem cells (MSCs) is receiving attention. However, the current literature reports are inconclusive regarding the robustness of the MSC monotherapy.

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As upper extremity transplantation is becoming more accepted worldwide, the demand for a fresh tissue cadaveric training model for this procedure is increasing and necessary to assure surgical success. Surgical rehearsals can decrease operative time, improve technique, and reduce errors made on the actual day of surgery. The purpose of this article is to describe a method for surgical rehearsal of upper extremity transplantation using cadaveric specimens based on the clinical experience of an academic institution with an active transplantation program.

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On July 3, 2014, the Organ Procurement and Transplantation Network/United Network for Organ Sharing was charged with the oversight of vascularized composite allograft (VCA) procurement and transplantation in the United States. As of December 31, 2017, 61 VCA programs at 27 centers were approved in the United States. Fifty candidates have been added to the waiting list at 15 centers.

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The International Society of Vascularized Composite Allotransplantation held its 13th congress "Defining Success" in October 2017 in Salzburg, Austria. A total of 122 delegates from 22 countries representing 5 continents attended the conference. The theme strived to provide pathways to accomplish best possible outcomes in this unique and multifaceted field of transplantation.

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Background: The medial femoral condyle (MFC) flap has become a popular choice for treatment of small bony defects. We aim to describe outcomes after MFC flap treatment of upper and lower extremity osseous defects and test the null hypothesis that no factors influence risks for nonunion, increased time to union, and complications.

Methods: A retrospective chart review was performed on all patients undergoing MFC free vascularized bone flaps by the senior author between May 2010 and March 2016.

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In this repeated measures case study, we show that sensory deafferentation after limb amputation leads to changes in cortical somatotopic maps which are reversible after restoration of sensory input. Using magnetoencephalography (MEG), we observed in a child with bilateral hand transplants large-scale shifts in somatosensory lip cortical representation from anatomic hand area to anatomic face region. After recovery of tactile sensation in the digits, responses to finger stimulation were localized to orthotopic sensory cortex, but with atypical electrophysiologic features (amplitude and frequencies).

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Background: Efforts to standardize hand surgery training during plastic surgery residency remain challenging. We analyze the variability of operative hand experience at U.S.

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In this report, we present a rat orthotopic forelimb allotransplantation model. Eight forelimbs were transplanted from Brown Norway rats to Lewis rats. Axillary vessels of transplant were used as the vascular pedicles, which were anastomosed to the external jugular vein and common carotid artery of the recipient rat.

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Introduction: Severe cervical contracture after burns causes obvious impairment of neck movement and the aesthetic silhouette. Although various surgical techniques for treatment have been described, there is not a definitive strategy to guide treatment. Over the past 6 years, we have been utilizing a region-oriented and staged treatment strategy to guide reconstruction of severe cervical contracture.

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The purpose of this study was to evaluate the difference in the outcomes of patients with a well-perfused hand who were taken to the operating room (OR) within 6 hours of forearm arterial injury vs patients who were treated in a semiurgent fashion. A review of 201 consecutive patients who were taken to the OR with forearm-level radial or ulnar arterial injury identified 26 patients who had a well-perfused hand at presentation in whom hemostasis was achieved within 15 minutes with manual pressure and no signs of hemodynamic instability. Outcomes of interest included short-version Disabilities of the Arm, Shoulder and Hand (quickDASH) scores and patient-reported cold intolerance.

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The field of vascularized composite allotransplantation has developed for more than a decade. Investigators are defining patient selection criteria, transplant indications, immunologic regimens, and tolerance. The majority of the current reported hand transplantations have been for treatment of distal forearm or hand amputations.

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In order to identify risk factors for readmissions following total hip arthroplasty (THA) and the causes and financial implications of such readmissions, we analyzed clinical and administrative data on 1583 consecutive primary THAs performed at a single institution. The 30-day readmission rate was 6.51%.

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Purpose: The purpose of this study was to assess the microsurgical training background of current members of the American Society for Surgery of the Hand (ASSH) and then determine the impact that prior training had on current microsurgical practice.

Methods: A 174-item anonymous Web-based survey was sent to all active ASSH members. Items addressed prior residency and fellowship training, practice setting, and training, comfort, and practice of specific microsurgical procedures.

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Purpose: Midline sternotomy remains the preferred technique for access in cardiac surgery. Application of steel wires has been the preferred method of closure. Because of associated complications, such as superficial and deep infections, as well as bony nonunion complications, an alternative technique is being proposed.

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Unlabelled: Skeletal reconstruction of large tumor resection defects is challenging. Free vascularized fibular transfer offers the potential for rapid autograft incorporation in limbs compromised by adjuvant chemotherapy or radiation. We retrospectively reviewed 30 patients treated with free vascularized fibular graft reconstruction of large skeletal defects after tumor resections (mean defect length, 14.

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