第二至第五腕掌关节背侧脱位：一例报告
Dorsal dislocations of the second to fifth carpometacarpal joints: a case report.
作者信息
Mito Kazuaki, Nakamura Toshiyasu, Sato Kazuki, Toyama Yoshiaki, Ikegami Hiroyasu
机构信息
Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan.
出版信息
Hand Surg. 2008;13(2):129-32. doi: 10.1142/S021881040800389X.
Dislocations involving the four ulnar carpometacarpal joints are rare. These complex dislocations are considered to be due to the application of a hyperflexion force on the metacarpal heads. In the present case, an indirect hyperextension force on the metacarpal bones created a lever-arm effect resulting in rupture of the firm ligament complex of the carpometacarpal joints, inducing complete dislocations of the second to fifth carpometacarpal joints.
累及四个尺侧腕掌关节的脱位很少见。这些复杂脱位被认为是由于掌骨头受到过屈力所致。在本病例中，掌骨上的间接过伸力产生了杠杆臂效应，导致腕掌关节坚固的韧带复合体断裂，引起第二至第五腕掌关节完全脱位。
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