下颌骨截骨术后近髁状突段移位是近期复发、颞颌关节疼痛及功能障碍的主要因素。过去14年来许多学者对此进行了研究,设计了一些防止近髁状突段移位的方法及装置。但这些方法中多存在设计操作复杂的缺点。本文介绍了作者过去5年来采用的一种髁状突维持装置(CPD),可在术中使近髁状突段复位于术前位。 20例双侧下颌骨升支矢状截骨术前移下颌骨的病例,年龄16～33岁。平均24.8岁。平均前移量5.6mm(3.4～7.8mm)。固定采用3个2mm钴铬螺钉。10例固定前使用CPD,另10例不使用CPD。手术前后拍颞颌关节位片,测量髁状突垂直向、水平向和旋转移位 Mandibular osteotomy near the condylar segment displacement is the recent recurrence, temporomandibular joint pain and dysfunction in the main factors. Many scholars have studied this in the past 14 years and designed some methods and devices to prevent the displacement of the condylar segment. However, many of these methods have the disadvantage of complicated design and operation. This article describes a condylar holding device (CPD) used by the authors over the past five years to reposition near-condylar segments preoperatively during surgery. 20 cases of bilateral mandibular ascending sagittal osteotomy before the removal of mandibular cases, aged 16 to 33 years. Average 24.8 years old. The average shift of 5.6mm (3.4 ~ 7.8mm). Fixed with 3 2mm cobalt-chromium screws. Ten patients used CPD before fixation and the other 10 patients did not use CPD. Temporomandibular joint position films were taken before and after surgery to measure vertical, horizontal and rotational displacement of condyles