Coalition of trapezoid, capitate, and metacarpal: a case report.

Carpal coalition is a rare wrist anomaly. A coalition can be an isolated condition, but it can be observed as a component of a congenital syndrome as well. Carpal coalition is usually asymptomatic and detected incidentally. It is most frequently encountered as lunate-triquetral coalition, followed by capito-hamate coalition. Other coalition types are very rare. In this case report, we present a case in which the patient applied with complaints of pain, and in whom a coalition of capitate-trapezoid- second and third metacarpal was detected.