OBJECTIVE: to probe into the mechanism of extracorporeal shock wave in treatment of nonunion and delayed union of bone fracture and the existed unsolved problems in the clinical study.

目的：探讨体外冲击波在治疗骨折不愈合和延迟愈合的机制以及临床研究中存在的问题。

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Unilateral external fixator combined with bone graft is an effective therapy for postoperative non-union of humerus shaft fracture. Its clinical application is being expected.

单侧外固定器结合植骨是治疗肱骨干骨折内固定术后不愈合的有效疗法，值得临床推广应用。

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