Clinical Outcomes of Minimally Invasive Posterior Decompression for Lumbar Spinal Stenosis with Degenerative Spondylolisthesis

In Brief Study Design. Retrospective cohort study. Objective. To compare the clinical outcomes 5 years after minimally invasive posterior decompression for lumber spinal stenosis (LSS) between patients with and without degenerative spondylolisthesis (DS). Summary of Background Data. Indications surgical procedures LSS DS are still under investigation. Since surgery does not affect most anatomical structures, preoperative may negatively decompression. Methods. Overall, 198 who underwent microendoscopic or microscopic were followed up more than postoperatively included in present Patients showed a segmental kyphosis >5° at level during flexion treated fusion surgery. However, other patients, including those DS, The divided into two groups: group 82 >3-mm slip non-DS 112 ?3-mm slip. A mixed-effects model adjusted age sex was used to improvements visual analog scale score low-back pain Japanese Orthopaedic Association groups. For subgroup analysis (n = 53), changes physical component summary mental Short Form-36 groups evaluated. Results. There no significant difference improvement Subgroup Conclusion. After carefully eliminating instability, did Level Evidence: 3 Minimally techniques, laminectomy endoscopic decompression, preserve paravertebral muscles intervertebral joints. Degenerative is common condition accompanied by lumbar stenosis. Posterior effective spondylolisthesis, back pain, symptoms, quality life.