[Idiopathic osteolysis (Hajdu-Cheney) (author's transl)]

The well-known clinical and radiological findings of idiopathic osteolysis (Hajdu-Cheney) are described in a 17-year old man. He also had retarded puberty, recurrent dislocation of the patella, dental anomalies and markedly elevated alkaline and acid serum phosphatase. The differential diagnosis of this rare condition and its relationship to other bone dysplasias is discussed.