Traumatic divergent dislocation of the extensor tendons over the metacarpophalangeal joint.

Dislocation of the extensor tendon over the metacarpophalangeal joint (MCP) is rare. Involvement of the fifth ray is even more exceptional. The authors of the present study describe such a case that occurred in a professional musician. We report a divergent dislocation of both extensor tendons over the metacarpophalangeal joint of the fifth finger.