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Transabdominal motor evoked potential neuromonitoring of lumbosacral spine surgery.

Spine J

September 2024

Department of Orthopedics, Houston Methodist Health System, 6560 Fannin Street, Houston, TX 77030, USA.

Background Context: Transcranial Motor Evoked Potentials (TcMEPs) can improve intraoperative detection of femoral plexus and nerve root injury during lumbosacral spine surgery. However, even under ideal conditions, TcMEPs are not completely free of false-positive alerts due to the immobilizing effect of general anesthetics, especially in the proximal musculature. The application of transcutaneous stimulation to activate ventral nerve roots directly at the level of the conus medularis (bypassing the brain and spinal cord) has emerged as a method to potentially monitor the motor component of the femoral plexus and lumbosacral nerves free from the blunting effects of general anesthesia.

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Introduction: Reports on medial gastrocnemius myocutaneous (MGM) flaps with extended inferior and posterior boundaries are rare, and information about the MGM flaps with extended anterior boundaries is unavailable. Thus, this study aimed to investigate the vascular anatomical basis and clinical reliability of the modified MGM flap with extended anterior, inferior and/or posterior boundaries.

Methods: Five fresh lower limb specimens from patients with recurrent tumours in the thigh were immediately irrigated and perfused.

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Objective: The aim of this study was to examine the short-term patency rates and associated factors of open lower limb, iliofemoral to tibial bypass using cryopreserved saphenous vein (CSV) in a minority population at an acute care hospital in New York City.

Methods: A retrospective analysis of patients undergoing infra-inguinal bypass from iliofemoral vessels to tibial arteries with CSV between March 2020-April 2022 at an acute care facility (Harlem Hospital Center, Harlem, New York) was performed. Data including patient demographics, comorbidities, type of operation, follow-up surveillance, and salvage procedures were collected.

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