Spine
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Multicenter Study
Clinical outcome in lumbar decompression surgery for spinal canal stenosis in the aged population: a prospective Swiss multicenter cohort study.
This is a prospective, multicenter cohort study including 8 medical centers in the metropolitan area of the Canton Zurich, Switzerland. ⋯ 3.
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Multicenter Study Comparative Study
Complications in operative Scheuermann kyphosis: do the pitfalls differ from operative adolescent idiopathic scoliosis?
A prospective multicenter database of operative patients with Scheuermann kyphosis (SK) with minimum 1-year follow-up was studied for major complications compared with contemporaneous operative patients with adolescent idiopathic scoliosis (AIS) from the database. ⋯ 2.
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Randomized Controlled Trial Multicenter Study
Superion interspinous process spacer for intermittent neurogenic claudication secondary to moderate lumbar spinal stenosis: two-year results from a randomized controlled FDA-IDE pivotal trial.
Prospective, multicenter, randomized, controlled, investigational device exemption noninferiority trial. ⋯ 2.
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Retrospective review of prospective multicenter database. ⋯ 2.