[Ulnar dimelia: Management of a rare malformation].

Mirror hand is a rare congenital deformity of the upper limb which is characterized by duplication of the ulna (ulnar dimelia), absence of the radius and polydactyly. The authors report a case of ulnar dimelia with treatment of the of the elbow stiffness by surgery and splinting, and the flexed radial club hand deformity of the wrist solely by early splinting. This treatment was performed both before and after pollicization which was performed at 12 months. The stiffness of the elbow and wrist is very difficult to treat and remains a major problem whereas pollicization is now an established and successful means of treating the hand deformity.