Objective:Total hip arthroplasty (THA)and hemiarthroplasty (HA) are effective methods currendy used to treat femoral neck fracture in elderly patients,but the two options remain controversial in patients over 70 years old.The main purpose of our study was to determine whether THA or HA is a superior treatment of femoral fractures involving a displaced neck in patients who are over 70 years of age.Methods:A computer-based online search of Medline (1970-2011),PubMed (1977-2011),and the Cochrane Central Register of Controlled Trials (2002-2011) was conducted.Six relevant randomized controlled trials with a total of 739 patients were included for the final analysis.The analysis was performed with software RevMan 5.0.Results:We found that compared with THA,HA needed shorter average time and lost less blood.While over the long-term follow-up,THA patients exhibited significantly less pain and better function and were less likely to require a revision hip surgery.Postoperative infection was equally common among HA and THA patients.Conclusions:The significant differences in outcomes suggest that THA is a valuable treatment option for active elderly hip fracture individuals.However,patients who are older,impaired or institutionalized benefit from HA.