Rotary subluxation of the metacarpophalangeal thumb joint: a case report.
J Orthop Surg (Hong Kong)
; 17(3): 366-9, 2009 Dec.
Article
em En
| MEDLINE
| ID: mdl-20065382
ABSTRACT
Irreducible rotary subluxation of the metacarpophalangeal joint (MCPJ) of the thumb is a rare entity. Open reduction is indicated when signs of irreducibility are seen on the radiographs. We present one such case caused by displacement of the sesamoid bone into the intercondylar notch of the first metacarpal bone. A 35-year-old woman sustained a twisting injury to her right thumb by pronating and hyperextending it while attempting to retrieve things that she had dropped into a basin conduit. True lateral radiographs showed rotary subluxation of the thumb MCPJ, a sesamoid bone overlapping with the metacarpal head, and loss of the subsesamoid joint space and an incongruent MCPJ on full flexion. A high level of clinical suspicion is needed to diagnose this rare entity.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Polegar
/
Articulação Metacarpofalângica
Tipo de estudo:
Diagnostic_studies
Limite:
Adult
/
Female
/
Humans
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article