本文对9只犬(空白对照1只)颞颌关节紊乱综合症(TMJDS)器质性病变根治术与髁突高位切除术术后的关节结构形态、组织学及超微结构的改变进行了观察比较。根治术组见髁突完全再生,软骨修复完善,关节下腔存在,关节盘完整,翼外肌重新附着;髁突高位切除术组普遍形成盘突粘连,并出现关节盘穿孔及关节窝病变。本研究提示:根治术是一种符合生物解剖生理结构的关节重建方法。 In this paper, we observed the changes of the joint structure, histology and ultrastructure of nine dogs (control group 1) TMJDS organic radical mastectomy and condylar height resection Compare In the radical operation group, condyle was completely regenerated, the cartilage was repaired well, the inferior articular surface was present, the articular disk was intact, and the wing outer muscle was reattached. The disc condyle was formed generally in the condylar high resection group, and the perforation of the intervertebral disc and the joint-joint lesion appeared. This study suggests that radical mastectomy is a kind of joint reconstruction method that is consistent with the biological anatomy and physiology.