What is the fine-grained topic of the following text: Study Design.A retrospective review of clinical and radiographic data was performed at a single institution.Objectives.To compare clinical and radiologic outcomes between unilateral and bilateral laminotomies for bilateral decompression in patients with L4–L5 spinal stenosis.Summary of Background Data.Laminotomy has been shown to be comparable with laminectomy with the advantage of potentially maintaining more stability by preserving more of the osseous structures. Only return the topic.
Comparison of clinical and radiologic outcomes between unilateral and bilateral laminotomies for bilateral decompression in patients with L4–L5 spinal stenosis.