Multiple epiphyseal dysplasia
Fairbank's disease or multiple epiphyseal dysplasia (MED) is a rare genetic disorder (dominant form — 1 in 10,000 births) that affects the growing ends of bones. Bones usually elongate by a process that involves the depositing of cartilage at the ends of the bones, called ossification. This cartilage then mineralizes and hardens to become bone. In MED, this process is defective.