The disorder is hard to diagnose early as the symptoms do not become pronounced until late in childhood. Sufferers are advised to avoid obesity. This disorder affects only one limb and only one half of this limb. It manifests itself in late childhood and develops into an irregular shaped enlargement of half of the epiphyses - usually the medial half. It most commonly affects the knee joint.
Large osteochondromas can interfere with skeletal growth causing deformity.
In some instances they are relatively problem free. Partial excision of the overgrowth, if large is required. Dysplasia AD Sufferers develop symmetric, cortical thickening of one or more of the larger bones such as the tibia, femur or humerus. Only the diaphyseal portion of the bone is affected. The attached muscle is subsequently weakened so walking is delayed in infants whose leg bones are affected.