Dysplasia epiphysealis hemimelica of the hand: two cases at the proximal interphalangeal joint.

We report two cases of dysplasia epiphysealis hemimelica (Trevor's disease) at the PIP level of the finger. In one girl the first radiographic signs were seen at the age of 4 years, and progressive clinodactyly required treatment at the age of 7 years. She underwent an osteotomy. The second girl was seen with a clinodactyly and the accessory growth center was present already at the age of 5 years. The intra-articular exostosis was removed. Both had a complete correlation and a full range of motion.