Two Portal Percutaneous Endoscopic Decompression for Lumbar Spinal Stenosis: Preliminary Study

Study DesignRetrospective.PurposeTo report the outcomes of patients with lumbar spinal stenosis treated with percutaneous endoscopic decompression, focusing on the results of clinical evaluations.Overview of LiteratureThere are no studies about two portal percutaneous endoscopic decompression in the treatment of lumbar spinal stenosis.MethodsMedical and surgical complications were examined and clinical results were analyzed for 30 patients who consecutively underwent two portal percutaneous endoscopic decompression for lumbar spinal stenosis were reviewed. The operations were performed by unilateral laminotomy for bilateral decompression.ResultsAll patients displayed clinical improvement when were evaluated with visual analog scale (VAS) score of pain, Oswestry disability index (ODI) and Macnab criteria. The improvement of VAS and ODI was 8.3±0.7 to 2.3±2.6 and 65.2±13.7 to 24.0±15.5, respectively (both p