[The operative treatment of the subtrochanteric pseudarthrosis of the femur in the case of pffd (author's transl)].

The authors discuss 7 cases of congenital subtrochanteric pseudarthroses of the femur which do not fit into the traditional schemes--neither from the histologically nor from the X-ray aspects. A valgus angulation osteotomy was carried out in each case. The procedure depending on the acutness of the angle. The results are positive.