Treatment of lumbar spinal stenosis with a total posterior arthroplasty prosthesis: implant description, surgical technique, and a prospective report on 29 patients

摘要: Object Total disc replacement is an alternative to lumbar fusion, but patients with spinal stenosis, spondylolisthesis, and facet arthropathy are often excluded from this procedure because increased adjacent-segment motion can exacerbate dorsal spondylotic changes. In such cases of degenerative spondylolisthesis decompression fusion remain the gold standard treatment. To avoid attendant loss at treated segment, TOPS system a novel total posterior arthroplasty prosthesis that allows for dynamic, multiaxial, three-column stabilization preservation. The purpose study report preliminary surgical data clinical outcomes in system. Methods Twenty-nine were enrolled nonrandomized, multicenter, prospective pilot outside US. All had stenosis and/or L4–5 due arthropathy. Radiographs scores on...