Ring David
Department of Orthopaedic Surgery, Hand and Upper Extremity Service, Massachusetts General Hospital, Boston, MA 02114, USA.
J Hand Surg Am. 2009 Apr;34(4):739-44. doi: 10.1016/j.jhsa.2009.01.026.
Apparent fractures of the capitellum are often more complex involving the trochlea and the posterior aspect of the lateral column. Many of these fractures can be addressed through an extended lateral exposure, but fixation techniques specific to small, nearly entirely articular fragments will be necessary. When the fracture fragments do not fit, there is usually posterior impaction of the lateral column and sometimes the posterior trochlea.
肱骨小头的明显骨折通常更为复杂,累及滑车和外侧柱的后侧。许多此类骨折可通过扩大外侧入路来处理,但对于小的、几乎完全为关节内的骨折块,需要特定的固定技术。当骨折块不匹配时,外侧柱通常会有后方嵌插,有时滑车后方也会出现这种情况。