Resumen del estudio

16 randomized controlled trials (1813 patients) that compared unipolar hemiarthroplasty against bipolar hemiarthroplasty in patients with displaced femoral neck fractures were included in this systematic review and meta-analysis. Outcomes of interest included the incidence of acetabular erosion, Harris Hip Score (HHS), Normalized Pain Scale (NPS), range of motion (ROM), incidence of mortality, dislocation, reoperation, and infection, 6-minute walk-test, and quality of life measured using the EuroQol 5D (EQ-5D) questionnaire. Acetabular erosion at 6 and 12 months, HHS scores at 12 and 24 months, postoperative pain at 12, 24, and 48 months, and the EQ-5D scores at 48 months all favored the bipolar group compared to the unipolar group. All other outcomes were similar between the two groups.