Efficacy of different approaches of spinal endoscopy in the treatment of L 4-5 intervertebral disc herniation

Objective To compare the clinical efficacy of two approaches under spinal endoscopy in the treatment of L 4-5 intervertebral disc herniation. Methods A retrospective analysis was performed for 148 patients with L 4-5 intervertebral disc herniation treated in The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University from January 2020 to June 2023. Among them, 68 cases were treated with percutaneous endoscopic transforaminal discectomy (PETD group), and 80 cases were treated with percutaneous endoscopic interlaminar discectomy (PEID group). Surgical time, intraoperative fluoroscopy frequency, intraoperative bleeding volume, postoperative hospital stay, and clinical efficacy were compared between two groups. Preoperative and postoperative lumbar Oswestry dysfunction index (ODI), VAS score for lower back and leg pain were compared. Results Patients in both groups were followed up for 6-36 months, with an average of 21.6 month. The surgical time, intraoperative bleeding volume, postoperative hosp