Dorsal dislocations of the second to fifth carpometacarpal joints: a case report.
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.
Mito
Kazuaki
K
Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan.
Nakamura
Toshiyasu
T
Sato
Kazuki
K
Toyama
Yoshiaki
Y
Ikegami
Hiroyasu
H
D000368:Aged; D001864:Bone Wires; D052737:Carpometacarpal Joints / Q000000981:diagnostic imaging / Q000293:injuries*; D005500:Follow-Up Studies; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D008297:Male; D019637:Orthopedic Procedures / Q000379:methods*; D011859:Radiography; D016896:Treatment Outcome