The treatment of femur shaft fracture during and after the hip replacement arthroplasty is difficult and troublesome. The methods of treatment include hip spica cast, open reduction and internal fixation with plate and screws, and revision arthroplasty with long stem prosthesis, etc. The authors report 6 cases of femur shaft fracture during and after the hip replacement arthroplasty which were treated with Partridge cerclene system with or without addition of cerclage wiring. plate and screws, long stem prosthesis, etc. The results were as follows; The procedure of Partridge cerclene system application was relatively simple and effective fixation could be obtained for the fracture at distal stem area, where screws could not be fixed. With rigid fixation, range of motion excercise and early ambulatian was possible, so hospital days could be reduced also. The periodic observation will be necessary for evaluation of late complications such as implant loosening etc.