Objective To summarize the experiences of 4 cases of posterior interosseous nerve branch injury treated with one -stage tendon transfer for thumb extending reconstruction. Methods From September 2011 to January 2016, 4 cases of posterior interosseous nerve injury were admitted in our department. Branch injury of the nerves were confirmed during surgical exploration. While the combined muscle and nerve injuries were repaired, the palmaris longus tendon was transferred immediately to extensor pollicis longus in order to reconstruct the thumb extending function. Results After 4 weeks immobilization and rehabilitation after that, all patients regained satisfactory wrist and digit extending and excellent function of the thumb. Conclusion In the cases of posterior interosseous nerve, surgical exploration should be performed carefully to distinguish whether it is the branch injury or not. One-stage tendon transfer for thumb extending reconstruction in the cases of nerve branch injury is one of reasonable alternatives.%目的 总结4例骨间后神经分支损伤Ⅰ期行肌腱转位重建伸拇功能的治疗效果.方法 2011年9月-2016年1月收治骨间后神经分支损伤患者4例,在行肌腱、神经修复后,Ⅰ期采用掌长肌腱至拇长伸肌腱转位重建伸拇功能.结果 4例患者术后均以石膏固定患肢,4周后拆除石膏进行康复训练,所有病例均可在拇指掌侧外展后充分伸直,腕、指功能恢复良好.结论 针对骨间后神经部分分支损伤的病例,术中仔细鉴别损伤的情况,采用Ⅰ期肌腱转位重建伸拇功能可以收到良好的效果.
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