Conclusions:The anatomic relationship of adjacent tissues with the structure of TMJ is the important reference for operations with TMJ arthroscopy.

• 结论：手术者熟知颞下颌关节的结构及其与邻近重要组织的解剖关系才能掌握好穿刺的角度和深度，控制手术范围，尽量减少手术并发症的发生。