The arytenoid mobilities and histological changes of cricoarytenoid (CA) joints were observed in 1,2,4,6,8,10,12 months after the injury of recurrent laryngeal nerve (RLN).

• 为观察喉返神经(RLN)损伤后杓状软骨及环杓关节的变化，将18只犬分为3组。