The intertrochanteric fracture of the femur occurs frequently in the elderly who has osteoporosis. These fractures had been treated with many fixation devices. Recently dynamic hip screws been commomly used. But, some complications were reported by this fixation the patients who were osteoporotic and/or who had unstable type fracture. We have analysed the roentgenograms and the medical records to study impaction degree and change of neck-shaft angle according to fracture type and degree of osteoporosis in the 35 patiensts wit minimum 1 year follow-up who have intertrochanteric fracture of the femur treated with dynamic hip screws, from Jhn. 1989 to Jun. 1993, retrospectively. The results obtained were as follows; 1. The most common fracture type by Bord-Griffin classification was type I, 19 cases(57%), and the most common osteoporotic by Sight's index was grade II, 21 cases(60%). 2. There were no significant differences of impaction degree and neck-shaft angle according to the fracture types or osteoporosis degrees. 3. The mean impaction degree of fracture site was 9.3mm and the mean neck-shaft angle change was 0.8??of varus angulation.