Comparison of Cementless Calcar-Replacement Hemiarthroplasty With Proximal Femoral Nail for the Treatment of Unstable Intertrochanteric Fractures at Older Age Group

Background: The aim of this study was to compare the outcomes of unstable intertrochanteric femur fractures treated with cementless calcar-replacement bipolar hemiarthroplasty (CRH) and proximal femoral nail (PFN) in elderly patients. Methods: All consecutive unstable intertrochanteric fractures treated with cementless CRH or PFN at our institution between January 2015 and January 2019 were reviewed retrospectively. The primary outcome measures were postoperative complications, reoperation rate, and hip function. The secondary outcome measures were intraoperative blood loss, transfusion rate, surgical time, hospital stay, and two- year mortality. Results: Ninety-four patients in the hemiarthroplasty group and 77 patients in the PFN group were included for analysis. There were no significant differences between the two groups regarding the complications, ASA score, and reoperation rate. Significant differences were found between hemiarthroplasty and PFN group in comparison of the average length of hospital stay (P < 0.05), time from hospitalization to operation (P < 0.05), intraoperative blood loss (P < 0.001), transfusion rate (P < 0.001), operation time (P < 0.001), Harris Hip Score (HHS; P < 0.001), and two-year mortality (P < 0.05). Conclusion: Both hemiarthroplasty and PFN produce satisfactory results in surgically treated unstable intertrochanteric femur fractures in the elderly. Both groups are associated with their own complications, but in the PFN group, better functional results, less surgery-related trauma, and lower mortality rates are the main advantages.