Dysplasia epiphysealis hemimelica of the ankle joint: a case report.

Dysplasia epiphysealis hemimelica is a rare non-hereditary epiphyseal disease that mimics synovial chondromatosis of the joints. The disease mainly targets long bones of the lower extremities and tarsal bones. We report one such case manifesting in the lateral tibia of a 13-year-old boy.