Abstract:Objective To analyze the efficacy of modified direct lateral approach versus modified posterolateral approach in hip arthroplasty for elderly femoral neck fractures.Methods A total of 102 elderly patients with femoral neck fractures treated at Sanya Central Hospital from February 2019 to January 2023 were divided into a study group and a control group, with 51 cases in each group, using a random number table. The control group underwent surgery via a modified posterolateral approach, while the study group underwent surgery via a modified direct lateral approach. Surgical parameters, pain levels, serum markers, hip joint function, balance function, and complications were compared between the two groups.Results The incision length in the study group was shorter than that in the control group (P < 0.05), and the postoperative weight-bearing and hospital stay were shorter in the study group than in the control group (P < 0.05). There was no significant difference in operation time and intraoperative blood loss between the two groups (P > 0.05). Visual analog scale (VAS) scores at different time points (preoperative, 12 hours postoperative, 24 hours postoperative, and 48 hours postoperative) were significantly lower in the study group compared to the control group (P < 0.05). Similarly, levels of procalcitonin (PCT), C-reactive protein (CRP), and erythrocyte sedimentation rate (ESR) were lower in the study group compared to the control group at different time points (P < 0.05). UCLA hip joint scores, Harris hip function scores, and balance function scores (BBS) were significantly higher in the study group compared to the control group at discharge, 1 month postoperatively, and 6 months postoperatively (P < 0.05). The overall incidence of complications was lower in the study group compared to the control group (P < 0.05).Conclusion Compared to the modified posterolateral approach, the modified direct lateral approach in hip arthroplasty for elderly femoral neck fractures yields better outcomes, improves balance and hip joint function, promotes postoperative recovery, reduces soft tissue damage and pain, and lowers the risk of complications.