27 patients with subtrochanteric fractures of femur, who have been admitted to the Depar1ment of Orthopaedics and Traumatology of SSK Goztepe Hospital between the years 1989-1991, have been treated by open reduction and internal fixation with Zickel ll nail. The cases have been followed for a mean period of 16 months (minimum 3 months, maximum 29 months). 26 cases who had been presented at the final control were assessed anatomically and functionally. It has been concluded that the Zickelll Nail, prevents complications such as implant failure, varus malunion: nonunion, Ieg Iength discrepancy and delayed weight bearing, especially in subtrochanteric fractures of femur that have posteromedial cortical defect.