European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society
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Fenestration is the gold standard surgery for lumbar spinal canal stenosis in Japan. Several previous studies have analyzed the reoperation rates in large numbers of patients undergoing several surgical procedures such as laminectomy with or without instrumented spinal fusion; however, there have been few studies focusing solely on fenestration. The purpose of this study was to calculate the reoperation rates after fenestration using the survival function method. ⋯ Fenestration can be performed at low cost using standard spinal surgery equipments. The reoperation rates of this procedure were lower than previously reported for several other surgical procedures.
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To determine the static and dynamic radiological findings characteristic of symptomatic foraminal stenosis. ⋯ A large segmental range of motion in sagittal plane of L5-S1 and posterior instability of L5 are risk factors for symptomatic L5-S1 foraminal stenosis. These dynamic radiological findings support the diagnosis of symptomatic foraminal stenosis.