OBJECTIVE To investigate the clinical efficacy of transverse process endoscopic transforaminal discectomy for the treatment of high-iliac-crest L5-S1 lumbar disc herniation. METHODS Seventeen patients with high-iliac-crest L5-S1 lumbar disc herniation who were treated with transforaminal endoscopy from April 2016 to January 2019 in the Department of Neurosurgery of Xuanwu Hospital were selected. The visual analog scale (VAS) and Oswestry disability index (ODI) were used to evaluate the efficacy of the procedure. RESULTS All of the patients successfully underwent the surgical treatment. Sixteen patients (94.1 %) completed effective follow-up for more than 12 months. The VAS was 7.8 ± 1.9, 2.9 ± 1.6, 2.3 ± 1.5 and 2.2 ± 1.6 before surgery and at one day, 3 months, and the last follow-up after surgery, respectively. The ODI scores were 52.8 ± 15.2 and 16.9 ± 9.7 before surgery and 3 months after surgery, respectively, both of which were lower than before surgery (both P < 0.01). EFFICACY EVALUATION An excellent outcome was achieved in 13 (81.3 %) patients, a good outcome in 1 patient (6.3 %), an acceptable outcome in 1 patient (6.3 %), and a poor outcome in 1 patient (6.3 %). CONCLUSIONS The transverse process endoscopic transforaminal discectomy is a safe and effective surgical method for the treatment of high-iliac-crest L5-S1 lumbar disc herniation.

中文翻译：

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横突内镜经椎间孔入路治疗高髂嵴L5-S1腰椎间盘突出症

目的探讨横突内镜椎间孔切除术治疗高髂嵴L5-S1腰椎间盘突出症的临床疗效。方法 选择2016年4月至2019年1月宣武医院神经外科行经椎间孔镜治疗的高髂嵴L5-S1腰椎间盘突出症患者17例。视觉模拟量表 (VAS) 和 Oswestry 残疾指数 (ODI) 用于评估程序的有效性。结果所有患者均成功接受手术治疗。16 名患者 (94.1 %) 完成了超过 12 个月的有效随访。术前、术后1天、3个月和末次随访时VAS分别为7.8±1.9、2.9±1.6、2.3±1.5和2.2±1.6。ODI 得分为 52.8 ± 15。术前和术后3个月分别为2和16.9±9.7，均低于术前（均P < 0.01）。疗效评估 13 名患者 (81.3 %) 取得了优异的结果，1 名患者 (6.3 %) 的结果良好，1 名患者 (6.3 %) 的结果可接受，1 名患者 (6.3 %) 的结果不佳。结论横突内镜椎间孔切除术是治疗高髂嵴L5-S1腰椎间盘突出症的一种安全有效的手术方法。