摘要
研究神经牵拉延长后的变化以提供临床参考。方法：使用自行设计的组织扩张器，在１５只家免正中神经做成体内神经牵拉延长模型，观察神经延长过程中的电生理学改变。结果：神经延长６．７％－１１．７％时，活动电位振幅下降至延长前的６４％，活动电位曲线下面积下降至下降前的７７％。神经延长１１．７％－１８．３％时，活动电位振幅和曲线下面积均下降至延长前的３３％。结论：用该法在短期内一次性完成对神经的损伤明显大于缓慢分次延长，神经在一定延长长度范围内，神经的功能下降是可复的。
A tissue expander wasdesigned and used for elongating median nerves in rabbits.The electro- physiological changes in the procedure of nerve elongation wasrecorded . The resultshowed the amplitude of active potential reduced to 64 % of that before elongation and the area under the curve of nerve active potential reduced to 77 % .when the elongation rate was 6 . 7 % - 1 1 . 7 % . the amplitude and area under the curve both reduced to 33 % , when the elongation rate was 1 1 . 7 % - 1 8 . 3 % . The impairment of nerves were more serious in on time short period elongation than in slow elongation . The impairment was reversible within certain ex- tent of elongation which has the potential to be used in nerve repair .
出处
《中华手外科杂志》
CSCD
1996年第1期35-37,共3页
Chinese Journal of Hand Surgery
基金
国家教委回国人员启动基金资助项目
关键词
周围神经
电生理学
神经延长术
Peripheral nerve Electrophysiology Nerve elongation
