Muscle weight was weighed. Results: ( 1) After penicillin and normal saline injecting into sciatic nerve-trunk perilemma, the symptoms of hind traipse, limping and appearance thinning were observed. Movement of uninjured was at home. 结果:(1)青霉素和生理盐水注射于坐骨神经干外膜下后,出现注射侧后肢拖曳,跛行,小腿外观变细,健侧运动自如。