Multiple epiphyseal dysplasia complicated by severe osteochondritis dissecans of the knee. Incidence in two families.

Two families are described which appear to contain examples of multiple epiphyseal dysplasia. In both families a striking incidence of severe osteochondritis of the knees was encountered. It is suggested that this was caused by the fragmented and maldeveloped epiphyses characteristic of epiphyseal dysplasia.