Abstract:Objective To explore the clinical effects in the treatment of degenerative lumbar spinal stenosis by the unilateral biportal endoscopy (UBE) spinal surgery using arthroscope.Methods Clinical data of 16 cases with degenerative lumbar spinal stenosis from January to May 2021 was retrospectively analyzed and totally followed- up after surgery. Compare the scores of VAS and ODI before operation and one week after operation and the follow-up, the efficacy evaluation was performed using modified MacNab system, the effectiveness and complications were observed.Results The VAS score in the back and leg pain and ODI of lumbar vertebral function, those two indexes were significantly improved (P < 0.05). Modified MacNab system:7 cases in excellent, 8 cases in good, 1 cases in fair and 0 cases in poor, with an excellent and good rate of 93.8%. The complications were: dural sac injury in 2 cases (including dural sac tear in 1 case) and short-term recurrence in 1 case.Conclusion The treatment of degenerative lumbar spinal stenosis by UBE spinal surgery using arthroscope can achieve good clinical results, especially for elderly patients.