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  • Title: Prophylactic Spinal Cord Untethering in Children with Spinal Dysraphism Undergoing Thoracolumbar Fusion for Scoliosis.
    Author: Bureau BL, Sherburne E, Thometz JG, Foy AB.
    Journal: World Neurosurg; 2023 Oct; 178():e427-e430. PubMed ID: 37499752.
    Abstract:
    BACKGROUND: It remains unclear whether spinal cord untethering is necessary to reduce the chances of neurologic decline in children with myelomeningocele and complex closed spinal dysraphism who undergo thoracolumbar fusion for scoliosis. We sought to determine the neurologic and functional outcomes of children with spinal dysraphism undergoing spinal fusion for scoliosis with and without prophylactic spinal cord untethering. METHODS: Retrospective, single-center review of patients with spinal dysraphism treated with thoracolumbar fusion over the last 10 years (2009-2019) with or without prophylactic spinal cord untethering. RESULTS: Seventeen patients with myelomeningocele and complex closed spinal dysraphism underwent spinal fusion for scoliosis. Mean age at time of surgery was 13.9 years. Prophylactic spinal cord untethering was performed in 8 of 17 (47%) patients. The change in Cobb angle after surgery was similar between the 2 groups (19.4° untethered vs. 19.9° no untethering). The ambulatory status was similar between the groups, with 37% of the untethered cohort and 44% of the non-untethered cohort being community or household ambulators. There were no changes in intraoperative motor or sensory evoked potentials in any patient during fusion surgery. No patient had a change in motor level or ambulatory status after scoliosis surgery. CONCLUSIONS: Our data suggest that prophylactic spinal cord untethering in children with spinal dysraphism undergoing thoracolumbar fusion for scoliosis may not be necessary in patients with moderate curvatures. Our conclusions are limited by the small sample size. A larger review of registry data may yield more powerful conclusions on the necessity of prophylactic spinal cord untethering in this patient population.
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