Bifid thumb type IV in children: transferring an epiphyseal segment of the proximal phalanx with insertion of the abductor pollicis brevis tendon.

Objective: To evaluate the clinical and functional results of the surgical treatment of bifid thumb type IV in children.

Materials And Methods: A retrospective study was undertaken from January 1995 to December 2006. Clinical and radiographic evaluations were made according to Wassel's classification.