[Treatment of idiopathic femur head necrosis by implantation of a preserved bone graft. Critical evaluation of the method].

Author reports on the result of treatment in 22 patients with idiopathic femoral head necrosis. Altogether 25 hips were treated with insertion of conserved bone graft. Improvement occurred in only about 1/4 of the operated hips, the other hips deteriorated both clinically and radiologically. The author thinks, reviewing the literature, that the cause of the partly failure was the inadequate selection of patients and the insufficiency of the method. The possibilities of further progression are outlined.