At present, medullary nailing is the best treatment for transverse and short oblique closed fractures of the femur and for most open fractures of the femur, provided that the procedure is indicated and that the proper technique is employed. The main requisite is that after the operation fixation should be so firm that the patient can walk without any additional support. To ensure this, additional sutures with one-millimeter wire should always be used if an open operation is performed. The nail should be strong enough fully to replace the fractured femur in weight-bearing. Most of the complications in our cases occurred within the first two years of our use of this method because of lack of experience and because the technique had not yet been perfected.