We analyze the results of the treatment of intertrochanteric fractures by using intramedullary hip screw.

We reviewed 34 patients of intertrochanteric fracture who were treated by using of intramedullary hip screw from March 1998 to February 2000, and we classified the fractures by Evans system. 26 cases were treated by closed reduction and internal fixation; 8 cases were by open reduction and internal fixation. We analyzed fracture figure and stability, amount of sliding of lag screw, the change of femur neck-shaft angle, postoperative activity and postoperative complication

Bony union was obtained in average 14.3 weeks. Gap of fracture site was formed in 2 cases and crack on entry area of nail was formed in 1 case. Postoperative wound infection occurred in laces and delayed union occurred in 1 case. The change of femur neck-shaft angle showed an average decrease 1.7 degree in stable fractures, 3.5 degree in unstable fractures. Lag screw was sided an average 1.0 mm in stable fractures, 2.6 mm in unstable fractures. Postoperative mobility were analyzed by score of Parker and Palmer, and showing from 7.6 score pretrauma to 3.37 score postoperation in 1 month, 5.0 score postoperation in 3 months, 7.48 score postoperation in 6 months and 7.5 score postoperation in one year.

Intramedullary hip screw in intertrochanteric fractures reduced the collapse by processing union of fracture site due to the less decreases of femur neck shaft angle and the shortening by sliding of lag screw