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长期以来,解剖学对环甲肌的作用和环甲关节运动的描写一直是:环甲肌的收缩与舒张牵引甲状软骨以环甲关节为支点,在贯穿两侧环甲关节的额状轴上作前倾和复位运动,借此增大和缩小甲状软骨角隅与杓状软骨之间的距离,完成声带紧张和松弛的调节.笔者认为这种观点不妥.因为它既不符合环甲肌的解剖特征,又无法解释环甲肌瘫痪所引起的临床体征.为了重新认识环甲肌的作用,我们用60个成人尸体喉进行了形态学观测,用8条家犬进行了实验研究,结果表明:
For a long time, the anatomy of the role of the ring armor and ring armor described has been described: the contraction and relaxation of the cricothyroid muscle thyroid cartilage to the fulcrum of the fulcrum, in the amount of bilateral armor axis joints For forward and reset movements, thereby increasing and decreasing the distance between the thyroid cartilage corner and the arytenoid cartilage to complete the regulation of vocal cord tension and relaxation .I think this view is inappropriate, because it does not meet the circumcision Anatomical features, and can not explain the clinical signs caused by circumcision .In order to re-recognize the role of the cricothyroid muscle, we used 60 adult cadaver morphological observation of the body, with eight dogs for experimental study showed that :