Lower lumbar; operation failure; Reoperation.
下腰椎；手术失败；再手术。
The complication rate of reoperation was 25%.
胆道再次手术后并发症发生率为25%。
With an appropriate method, reoperation can achieve satisfactory result.
正确选择再手术方法可以获得较为满意的疗效。
Reoperation should be performed at least six months after first operation.
再次鼻内镜手术效果满意，但要间隔半年以上。
The primary outcome measure was reoperation within the first postoperative year.
主要的观察项目为术后第一年再次手情况。
The primary outcome measure was reoperation within the first postoperative year.
主要的观察项目为术后第一年再次手情况。
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