The TMJ ankylosis could happen if the serious dislocation of the condylar segment with meniscus and ascending of the ramus occurred.

• 结论：髁状突骨折好发于髁颈部，髁状突矢状骨折及髁颈部骨折伴骨折断端和关节盘移位严重的骨折处理不当易发生关节强直。