I have treated since my publication in October 1948 three cases of tumor of the femur by resection of the femur and replacement of the femur by the tibia and fibula. The technique used was that described in the original publication. The functional results, especially walking with a prosthesis, were very good and were superior to those obtained by high amputation of the thigh or disarticulation of the hip. The movements of the new hip joint were satisfactory. The most striking fact is that two patients treated by partial turn-up plasty are alive and well twenty-two years and fifteen years after operation. On the other hand three patients treated by total turn-up plasty died from metastases from one to six years after operation.