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Journal of the Korean Society for Surgery of the Hand 2006;11(1):58-60.
Published online March 1, 2006.
Locking of Metacarpophalangeal Joint Due to Entrapment of Lumbricalis on Bony Protrusion of the Metacarpal Head of the Index Finger -Case report-
Hyoung Min Kim, Il Jung Park, Youn Soo Kim, Kee Haeng Lee, Chan Woong Moon, Nan Kyung Ha, Il Nam Son, Changhoon Jeong
인지 중수골두 골 돌출에 포착된 충양근에 의한 중수지 관절의 잠김 -증례 보고-
김형민, 박일중, 김윤수, 이기행, 문찬웅, 하난경, 손일남, 정창훈
Abstract
Locking of the metacarpophalangeal (MP) joint has been rarely documented. Cases have been reported with the following causes: marginal osteophytes of metacarpal head, tear of volar plate with enlarged articular eminence of the metacarpal head, enlarged impinging sesamoid bone, tear of the collateral ligament locking behind the metacarpal head, loose body in the MP joint and neoplasm of the volar plate. We experienced a case of locking of the MP joint caused by entrapment of the lumbricalis on a bony prominence of the second metacarpal head, which is a cause had not been reported previously. Locking was relieved by excision of bony prominence and freeing the lumbricalis muscle.
 


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