Six months after the operation, both abducent and adducent laryngeal muscle showed the action potential waves, the nervous latency was nearly normal, the nervous conduction speed of the PCA was reduced but that of the TA was normal.

• 吻合术后 6个月 ,喉内收及外展肌均出现动作电位波 ,其甲杓肌潜伏期与术前比较无差异 ,甲杓肌神经传导速度已恢复正常 ,环杓后肌神经传导速度稍慢。