关节盘移位是引起颞下颌关节内结构紊乱的主要原因.作者对12侧颞下颌关节盘前移位患者进行了外科治疗.此手术包括关节盘复位术,关节窝修整术及关节结节成形术.手术效果满意;术后,弹响、疼痛及关节绞锁等症状消失,张口度基本恢复正常.本文重点介绍手术适应征,手术方法和步骤,并讨论了临床、放射的诊断要点. Displacement of the articular disk is a major cause of structural disorders in the temporomandibular joint.The authors performed surgical treatment of anterior premolar displacement of the 12 mandibular temporomandibular joint.This procedure includes discectomy, joint repair and joint nodule formation Surgery, satisfactory results; after surgery, snapping, pain and joint twist and other symptoms disappear, the mouth of the basic return to normal.This article focuses on the surgical indications, surgical methods and steps, and discusses the clinical, radiological diagnosis points.