Pollicization in congenital differences.

Pollicization of the index finger is a well established procedure for some cases of thumb hypoplasia. We reviewed our experience of 27 "normal" index-finger pollicizations with a mean follow-up of seven years, excluding those cases with more extensive radial hypoplasia and abnormal fingers. Even in such an "ideal" situation, strength was deceptive and the frequently slender aspect of the new thumb with quite extensive dorsal scar formation and the "cleft" appearance of the first web disappointing. In a prospective series of 32 cases, we tried to improve both the function and appearance of the thumb by modifying the classical incision as well as the transferred muscles and tendons.