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环杓后肌作用为外展单侧声带,它由喉返神经支配,当此神经完全切断后导致声带旁正中位置固定。有多种恢复环杓后肌神经再支配的手术设计,尽管在临床上长期麻痹病人成功报道不少,但用神经肌肉蒂移植后失败也有一定数量报道,本文作者认为这与环杓后肌萎缩或疤痕组织替代有关。研究对象为三只成年狗,切断其一侧喉返神经后1月、6月、12月分别将狗处死,并作环杓后肌组织学检查,第一个狗的对侧声带作对照组。研究结果显示喉返神经切断一月后,切断侧环杓后肌的Ⅰ型纤
Ring scaphic muscle effect for the outreach unilateral vocal cord, which is dominated by the recurrent laryngeal nerve, when the nerve is completely cut off the vocal cords next to the median position. There are a variety of surgical designs for reinnervation of the posterior capsulotid medulla. Although there are many reports of successful long-term paralysis in the clinic, there are some reports of failures after the neuromuscular pedicle transplantation. According to the authors, Or scar tissue replacement. The object of study was three adult dogs. The dogs were sacrificed in January, June and December after cutting off the recurrent laryngeal nerve. The contralateral scrotum of the first dog was used as the control group . The results show that the recurrent laryngeal nerve cut off after a month, cut the c?