Objective To summarize the experience of three different kinds of internal fixation,dynamic hip screw(DHS),proximal femoral nail(PFN) and proximal femoral nail anti-rotation(PFNA),for intertrochanteric fracture(ITF) in the elderly and to evaluate their merits and deficiencies.Methods We retrospectively reviewed 71 patients who were treated for intertrochanteric fracture with DHS,PFN and PFNA from Mar.2004 to Sept.2007.The patients were divided into three groups: DHS group(26 cases),PFN group(23 cases) and PFNA group(22 cases).The clinical parameters involved the mean operative time,the mean blood loss during operation and postoperation,incision length,etc.The LSD test was used.The other results which taken placed in operation or postoperative followed up were also analyzed.Results(1)The mean operative time:the PFNA group took the least time than the PFN and the DHS groups.(2) The mean blood loss during operation and postoperation: blood loss of the PFNA group was less than that in the DHS group.(3) Incision length: the mean lesion of the PFNA group was the least in three groups.Conclusion The PFNA is better for different fracture types and for elderly patients with ITF because of less operative time,less blood losts and less incision length,which show that the PFNA may be a faster and safe surgical methed for interrochanteric fracture in the elderly.