Uni- and bipolar hemiarthroplasty with a modern cemented femoral component provides elderly patients with displaced femoral neck fractures with equal functional outcome and survivorship at medium-term follow-up

175 elderly patients with displaced intracapsular femoral neck fractures were randomly assigned to undergo unipolar or bipolar hemiarthroplasty (HA). The purpose of this study was to compare implant survival, ambulatory ability, and mortality rates between groups up to 5 years post-surgery. Unipolar HA resulted in a significantly higher dislocation rate compared to bipolar HA, however no significant differences were found with respect to implant survivorship, ambulatory ability, mortality rate, general complications, or radiographic analysis between groups throughout the follow-up period.