环杓后肌亦称声带外展肌,该肌麻痹时,有“外展肌麻痹”“环杓后肌瘫痪”和“正中位瘫痪”之称。近代耳鼻咽喉科学对此病症均有论述,文献报道更屡见不鲜。尽管命名不同,但都描述该肌麻痹时声带固定于正中位。许多学者对这种概念持反对意见,因此引起了一系列的论争。现将有关这方面的国内外文献进行综述。 解释声带正中位麻痹的学说 早在1860年,Turch首先用喉镜发现了喉返神经(RLN)麻痹病例。1863年Gerhardt发现声带麻痹于正中位者话声正常,故提出麻痹声带正中位固定是环杓后肌麻痹。1880年Rosenbach提出声带 Ring scaphic muscle also known as vocal cord abductors, the muscle paralysis, there are “abductor muscle paralysis” “ring scaphic muscle paralysis” and “median paralysis,” said. Otolaryngology in modern science have discussed this disease, the literature reports more commonplace. Although named differently, they all describe the vocal cord fixed to the median position during the paralysis. Many scholars disagree with this concept, thus arousing a series of controversies. Now on this aspect of the domestic and international literature review. The doctrine to explain the median vocal cord paralysis As early as 1860, Turch first discovered laryngeal recurrent laryngeal nerve (RLN) paralysis cases. In 1863 Gerhardt found normal vocal cord paralysis in the median speech, it is proposed that the median paralysis fixed vocal cesarean section muscle paralysis. In 1880 Rosenbach made the vocal cords