This is very rare. Patients have hypercalcemia. They are quite retarded with dwarfed limbs. Their eyes are set widely apart. They have a monkey like stance.
Patients have coxa vara and genu varum which causes their stunted growth and bowed legs.
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.