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, Article annexe (Accepté dans Spine Deformity, 2018.

, Do Curve Characteristics influence Stenosis Location and Occurrence of Radicular Pain in Adult Degenerative Scoliosis?

. Objective, The aim of this study was to describe the various locations of spinal stenosis (LSS) in lumbar scoliosis (DLS) and its related clinical symptoms

, Adult with lumbar scoliosis often present with pain and disability. Association of scoliosis and stenosis is not rare, but remains sparsely explored. Consequences of scoliosis on stenosis location and treatment remain debated

, All patients completed preoperative clinical and neurologic exam. Coronal and sagittal radiographic parameters, rotatory subluxation (RS) and spondylolisthesis were analyzed on fullspine x-rays. CT-scan multiplanar reconstructions were performed to measure central, Methods. Patients operated for symptomatic LSS with DLS (Cobb angle>20°) from 2015 to 2016 were included

, Mean Cobb angle was 33±16°. 35 (46%) patients had coronal malalignment; in 69%, side of the coronal tilt corresponded to side of the concavity of the lumbosacral curve. 60 patients had RS (most frequent level L3L4). In 50% of the cohort, RS was located at junction between lumbar and lumbosacral curves. In 70% (n=53) of the patients, central stenosis occurred at junction between lumbar and lumbosacral curve. Foraminal and lateral stenosis were most frequently observed in the concavity of the distal lumbo-sacral curve, 60% had neurogenic claudication, L5 was the most common radicular pain (41%)

, Relationships exist between curve characteristics and symptomatic LSS in DLS; especially, concavity of the lumbosacral contra-curve and the junctional level between lumbar curve and lumbosacral contra-curve and. Therefore, accurate analysis of stenosis in ASD seems mandatory, to at least performed decompression; since, perfect planned treatment for stenosis and scoliosis correction might not be always performed, Conclusion. LSS is frequent in DLS

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