开口位颞下颌关节盘不可复前移或前内移位,表现为开口度小于30mm、开口或前伸时下颌偏向患侧、原有的往复性弹响减轻或消失以及同侧肌肉疼痛。对这种“闭锁”的治疗,作者介绍一种简单的髁突牵动术。用标准的木质弹簧衣夹置于上下第二磨牙之间加力撑开,使髁突的关节面与关节结节分离, Open temporomandibular joint disc can not move forward or anteromedial shift, the performance of the opening less than 30mm, opening or extension of the mandibular deviation to the affected side, the original retractive sore reduce or disappear, and ipsilateral muscle pain. For this “lock” treatment, the authors introduce a simple condylar surgeon. With standard wooden spring clothespin placed between the upper and lower second molars to force open, the condyle articular surface and joint nodules separated,