Functional Outcomes of Posterior Decompression in Patients with Neurogenic Claudication due to Lumbar Canal Stenosis

Abstract

Background: Degenerative lumbar canal stenosis (LCS) is one of the frequently encountered problems in elderly. The long-term outcomes of posterior spinal decompression (PSD) on relief of neurogenic claudication (NC) due to LCS remain unclear. The aim of our study is to assess the functional outcomes of posterior decompression in patients with NC due to lumbar canal stenosis eliminating various heterogeneous factors. Materials and methods:A longitudinal prospective study conducted in 20 patients of homogenous group of age 60-80 years and other medical conditions who had undergone PSD from June 2018 to May 2020 at Rex Ortho Hospital adhering to inclusion and exclusion criteria with stable spine. Patients were assessed with Neurogenic Claudication Outcome Score (NCOS) and Japanese Orthopedic Association Score (JOAS) at preoperative and postoperative period. Results: At the end of the first year 85% had excellent outcome, 10% had good outcome, and 5% had fair outcome based on NCOS and JOAS. No patients had poor outcome or resurgery. Delayed wound healing was in one patient, and no radiological changes such as instability or further degenerative changes were identified. Conclusion:Posterior spinal decompression in patients with NC due to isolated lumbar canal stenosis yields excellent results based on NCOS and JOAS. Selection of patient is very important and careful assessment of other associated local or general problem may influence the outcome.