Lumbar canal stenosis (LCS) is a common condition affecting elderly patients for which a significant number undergo surgery. The validity and safety of simple laminectomy in this condition is not fully understood. Furthermore, the presence of pre-existing spondylolisthesis is controversial with respect to the need for additional spinal stabilization. We prospectively studied a consecutive cohort of 100 patients with clinical and radiological LCS under the care of a single spinal surgeon. Outcome measures (SF-36, visual analogue scores for back and leg symptoms, and the Roland/Morris back pain scores) were assessed preoperatively, 3 months postsurgery and at long-term (median 2 years) follow-up. We have shown a significant improvement in outcome sustained in the long-term with minimal morbidity. Patients with pre-existing spondylolisthesis accounted for 23% of the cohort and, having received identical treatment, showed no significant difference in outcome compared with patients with normal alignment.
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