Lumbar Endoscopic Unilateral Laminotomy With Bilateral Decompression Surgery in Severe Lumbar Stenosis Under Electrophysiological Monitoring-Focused on Full-Visualized Trephine/Osteotome

Objective: Although endoscopic drill has the advantages in manipulation and hemostasis, whose low efficiency blurred vision reduce efficacy of lumbar unilateral laminotomy with bilateral decompression (LE-ULBD). The present study was designed to evaluate safety full-visualized trephine/osteotome LE-ULBD surgery for severe stenosis.Methods: Fifty-seven stenosis patients who underwent between January 2020 2023 were enrolled, divided into visualized trephine groups. medical records including demographics, operative duration, intraoperative electrophysiological findings, postoperative hospital stay or stay, outcomes complications retrospectively reviewed analyzed.Results: A total 57 included 15 42 group enrolled study. There significant difference pre- visual analogue scale Oswestry Disability Index scores both groups (p < 0.05). mean duration (101.05 ± 12.18 minutes) shorter than that (134.67 9.68 no statistical 2 monitoring, posthospital stays, complications. Abnormal free-electromyography (EMG) recorded (13.3%) 5 (11.9%) group. Intraoperative somatosensory evoked potential changes occurred 3 (20%) (7.1%) all recovered immediately when ended. No serious recurrence patients.Conclusion: Full-visualized been approved be convenient, safe efficient our study, which combined translaminar inside-out technique EMG monitoring especially free-EMG may offer a new choice patients.