探讨腕管综合征术中电生理检测指标与预后的关系

Intraoperative distal motor latency as a predictor of carpal tunnel release

目的探讨腕管综合征术中正中神经远端运动电位潜伏期(distal motor latency,DML)与临床恢复预后的关系。方法对31例44侧临床诊断为腕管综合征的患者,根据术中DML检测结果分为三组。第1组：DML＜4．0ms,第2组：DML＞4．0～＜6．0ms,第3组：DML＞6．0ms。于术后2周、4周、3个月和6个月分别测定DML和患手握力及示指指腹两点分辨觉,并进行比较分析。结果术后6个月,患手握力与DML测定结果,第1、2组恢复明显优于第3组,两点分辨觉三组均基本恢复正常。结论腕管综合征术中DML测定可作为CTS术后的预后恢复参考指标之一。

Objective To evaluate the value of intraoperative distal motor latency （DML） as a predictor of carpal tunnel release. Methods 44 sides of carpal tunnel syndrome in 31 cases were involved in the study. These sides were divided into 3 groups according to findings of the intraoperative distal motor latency. DML of group Ⅰ was 〈 4.0 ms, of group Ⅱ 〉 4.0 ms but 〈 6.0 ms, and of group Ⅲ 〉 6.0 ms. Grip strength, two-point discrimination, and DML were evaluated at postoperative 2 weeks, 4 weeks, 3 months and 6 months. Results The outcome of group Ⅰ and Ⅱ was much better than that of group Ⅲ 6 months postoperatively regarding grip strength and DML. Two-point discrimination recovered to normal in all 3 groups 6 months postoperatively. Conclusion lntraoperative DML can serve as a predictor of treatment outcome in carpal tunnel release.