Hemidigital resection with collateral ligament transplantation in the treatment of macrodactyly: a case report.

Macrodactyly is a rare congenital anomaly of the hand that is difficult to treat. We describe a new technique consisting of hemidigital, longitudinal, and transverse en bloc resection with collateral ligament transplantation to the proximal interphalangeal joint that we used in a case of macrodactyly. Four years after the procedure the digit's appearance was largely improved with preservation of complete motion at the proximal interphalangeal joint. Transplantation of the collateral ligament ensured a stable joint. Fingertip sensibility was maintained.