Lumbar laminectomy alone or with instrumented or noninstrumented arthrodesis in degenerative lumbar spinal stenosis. Patient selection, costs, and surgical outcomes

Spine
J N KatzM H Liang

Abstract

A prospective, multicenter observational study. 1) Identify correlates of the decision to perform arthrodesis in patients undergoing laminectomy for lumbar spinal stenosis. 2) Compare symptoms, walking capacity, and satisfaction 6 and 24 months after laminectomy alone and laminectomy with noninstrumented and with instrumented arthrodesis. Few prospective studies have compared outcomes of laminectomy alone or laminectomy with noninstrumented or with instrumented arthrodesis in patients with degenerative lumbar spinal stenosis. There is uncertainty regarding the optimal use of arthrodesis and instrumentation. Two hundred seventy--two patients undergoing--surgery for degenerative lumbar stenosis by eight surgeons at four centers were included in the study cohort. Of these, 37 had noninstrumented and 41 had instrumented arthrodesis. Logistic regression identified factors associated with arthrodesis. The principal outcomes-health status, walking capacity, back and leg pain, and satisfaction with surgery-were assessed 6 and 24 months postoperatively with univariate and multivariate techniques. Outcomes also were assessed in a restricted cohort of patients with at least 5 mm spondylolisthesis and/or 15 degrees scoliosis. Hospital cost...Continue Reading

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