被动运动对家兔周围神经挤压伤后功能恢复的影响

目的研究被动运动对周围神经挤压伤后神经功能恢复的影响。方法用电生理学和组织学的方法观察被动运动对周围神经挤压伤后早期再生和运动功能恢复的影响，并与夹板固定组进行比较。结果康复组神经传导速度比夹板组快（P〈0．05），潜伏期缩短（P〈0．05）。康复组的髓鞘厚度、单位面积的有髓纤维数目、再生轴突直径均比夹板组大（P〈0．05）。康复组小腿三头肌湿重比夹板组大（P〈0．01）。结论被动运动能促进胫神经挤压伤后早期再生和运动功能的恢复。

Effect of Passive Exercise on Neural Functional Recovery in Rabbits after Peripheral Nerve Crushed Injury

Objective To investigate the effect of passive exercise on neural functional recovery after peripheral nerve crushed injury.MethodsThe effect of passive exercise on early peripheral nerve regeneration and recovery of motor function were observed with electrophysiological and histological indexes compared with that of the splinting group.ResultsThe nerve conduction of training group was faster than that in the splinting group,and the latency of compound muscle action potentials(CMAP)was shorter(P<0.05).The thickness of myelin sheath,average numbers of myelinated nerve fibera per area and diameter of regenerating axon in training group were larger than those in the splinting group(P<0.05).The wet weight of sural triceps of training group were bigger than that of the splinting group(P<0.01).ConclusionThe passive exercise can improve the early recovery of motor function and neural regeneration after peripheral nerve crushed injury.