OBJECTIVE To determine the efficacy of OLIF in the treatment of reoccurring discogenic low back pain (LBP) after discoblock METHODS: We included 108 patients with LBP that was suspected to be discogenic (such as high intensity zone, Schmorl's nodes, Modic changes Type I, etc.), from August 2015 to August 2017. All patients underwent discography, and patients whose LBP was confirmed to be discogenic received discoblock. Patients who had reoccurring pain after discoblock underwent OLIF. Perioperative parameters and complications were recorded. The VAS and Oswestry Disability Index (ODI) were assessed at preoperation, and 1 week and 1, 3, 6, and 12 months after the surgery. The fusion rate was evaluated. RESULTS Of 108 patients, 89 were confirmed to have discogenic LBP, and 32/89 patients with reoccurring LBP pain after discoblock underwent OLIF. Twenty-eight patients were followed up for ≥ 1 year. The OLIF operation lasted for 92 ± 34 min. Blood loss during the operation was 48 ± 15 ml. The mean incision length was 3.0 ± 0.6 cm. The average length of stay was 4.8 ± 1.9 days. The VAS and ODI scores decreased from 8.1 ± 1.7 preoperatively to 0.9 ± 0.4, and from 71.2 ± 11.3 to 9.3 ± 3.1, 12 months postoperatively, respectively. The total incidence of complications was 15.6%, including 2 cases of cage subsidence, 2 cases of ipsilateral hip flexor weakness, and 1 case of ipsilateral anterior thigh pain. All symptoms relieved or disappeared during follow-up. The fusion rate was 96.9%. CONCLUSIONS Reoccurring discogenic LBP after discoblock should be considered as a suitable group for treatment by OLIF.

中文翻译：

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通过斜腰椎间融合术（OLIF）治疗discoblock后，再次发生椎间盘源性下腰痛（LBP）。

目的：确定OLIF在迪斯科阻滞后治疗再发性椎间盘源性下腰痛（LBP）中的疗效。方法：我们纳入了108名怀疑是椎间盘源性LBP的患者（例如高强度区，Schmorl结节，Modic改变I型，等），从2015年8月至2017年8月。所有患者均接受了椎间盘造影，对LBP被确认为椎间盘源性的患者接受了discoblock治疗。Discoblock后复发性疼痛的患者接受了OLIF。记录围手术期参数和并发症。术前，手术后1周，1、3、6和12个月评估VAS和Oswestry残疾指数（ODI）。评价融合率。结果108例患者中，有89例被确认具有椎间盘源性LBP，而32/89例患者在使用Disoblock进行OLIF后再次出现LBP疼痛。28例患者接受了≥1年的随访。OLIF操作持续92±34分钟。术中失血量为48±15毫升。平均切口长度为3.0±0.6cm。平均住院时间为4.8±1.9天。术后12个月，VAS和ODI评分分别从术前的8.1±1.7降至0.9±0.4，从71.2±11.3降至9.3±3.1。并发症的总发生率为15.6％，其中包括2例笼下陷，2例同侧髋屈肌无力和1例同侧前大腿疼痛。随访期间所有症状缓解或消失。融合率为96.9％。结论迪斯科阻滞后再次发生盘源性LBP应该被认为是适合OLIF治疗的组。OLIF操作持续92±34分钟。术中失血量为48±15毫升。平均切口长度为3.0±0.6cm。平均住院时间为4.8±1.9天。术后12个月，VAS和ODI评分分别从术前的8.1±1.7降至0.9±0.4，从71.2±11.3降至9.3±3.1。并发症总发生率为15.6％，其中有2例发生网箱下陷，2例患侧髋屈肌无力和1例患侧前大腿疼痛。随访期间所有症状缓解或消失。融合率为96.9％。结论迪斯科阻滞后再次发生椎间盘LBP应该被认为是适合OLIF治疗的人群。OLIF操作持续92±34分钟。术中失血量为48±15毫升。平均切口长度为3.0±0.6cm。平均住院时间为4.8±1.9天。术后12个月，VAS和ODI评分分别从术前的8.1±1.7降至0.9±0.4，从71.2±11.3降至9.3±3.1。并发症总发生率为15.6％，其中2例发生网箱下陷，2例患侧髋屈肌无力，1例患侧大腿前痛。随访期间所有症状缓解或消失。融合率为96.9％。结论迪斯科阻滞后再次发生椎间盘LBP应该被认为是适合OLIF治疗的人群。术后12个月，VAS和ODI评分分别从术前的8.1±1.7降至0.9±0.4，从71.2±11.3降至9.3±3.1。并发症总发生率为15.6％，其中有2例发生网箱下陷，2例患侧髋屈肌无力和1例患侧前大腿疼痛。随访期间所有症状缓解或消失。融合率为96.9％。结论迪斯科阻滞后再次发生盘源性LBP应该被认为是适合OLIF治疗的组。术后12个月，VAS和ODI评分分别从术前的8.1±1.7降至0.9±0.4，从71.2±11.3降至9.3±3.1。并发症总发生率为15.6％，其中2例发生网箱下陷，2例患侧髋屈肌无力，1例患侧大腿前痛。随访期间所有症状缓解或消失。融合率为96.9％。结论迪斯科阻滞后再次发生椎间盘LBP应该被认为是适合OLIF治疗的人群。随访期间所有症状缓解或消失。融合率为96.9％。结论迪斯科阻滞后再次发生椎间盘LBP应该被认为是适合OLIF治疗的人群。随访期间所有症状缓解或消失。融合率为96.9％。结论迪斯科阻滞后再次发生椎间盘LBP应该被认为是适合OLIF治疗的人群。