[Nail fold formation using a thenar flap in complete syndactylia].

In complete syndactyly fingers are fused along their whole length and the nail is continuous over a narrow osseous bridge between the nail processes of the distal phalanges. When the fingers are separated there is no adjacent skin to form a lateral nail fold and, therefore, the finger end will become distorted. By using a thenar flap to the dorsal aspect of the syndactylic finger tips material is transferred to create normal lateral nail folds when the fingers are separated some months later.