The impact of reoperation after bipolar hemiarthroplasty for femoral neck fracture: A matched cohort comparison between septic and nonseptic causes
Wei-Lin Chang1,2
, Cheng-Yang Chang1,2, Jui-Chien Wang1,2, Shang-Wen Tsai1,2, Cheng-Fong Chen1,2, Po-Kuei Wu1,2, Wei-Ming Chen1,2
1Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan
2Department of Orthopaedics, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
Keywords: Complication, femoral neck fracture, hemiarthroplasty, infection, mortality, readmission, reoperation, revision hip arthroplasty.
Abstract
Objectives: This study aims to compare the rates of medical complication and mortality following initial bipolar hemiarthroplasty (bHA) and reoperation procedures, as well as between different causes of reoperation (nonseptic vs. septic).
Patients and methods: The retrospective study included 118 patients undergoing reoperation after bHA for femoral neck fractures between January 2002 and December 2022. The primary outcomes included in-hospital complications, readmission, and mortality events, while secondary outcomes included length of hospital stay, transfusion rates, and estimated blood loss. These outcomes were compared between each patient’s initial bHA and their subsequent reoperation procedure. The two cohorts were matched using propensity scores based on age, sex, and Charlson Comorbidity Index to compare outcomes between nonseptic and septic causes of reoperation.
Results: Of the 118 patients, 64 were male and 54 were female. The mean age was 77.8 ± 7.9 years, with a range of 61 to 98 years. The in-hospital complication rate was higher after reoperation than after initial bHA (15.3% vs. 1.7%, p < 0.001). Conversely, the readmission rate was higher after the initial procedure (60.2% vs. 23.7%, p < 0.001), mainly due to surgical complications. Patients undergoing reoperation had longer hospital stays, higher transfusion requirements, and more frequently received general anesthesia compared to the initial procedure (p < 0.05). In the matched cohort, septic group had higher in-hospital complication rates than the nonseptic group (23.5% vs. 3.9%, p = 0.004), while readmission and mortality rates were comparable.
Conclusion: Reoperations after bHA carry a higher risk of medical complications. This risk is particularly pronounced in cases related to septic conditions, underscoring the greater impact of reoperation and careful clinical attention.
Citation: Chang WL, Chang CY, Wang JC, Tsai SW, Chen CF, Po-Kuei Wu, et al. The impact of reoperation after bipolar hemiarthroplasty for femoral neck fracture: A matched cohort comparison between septic and nonseptic causes. Jt Dis Relat Surg 2026;37(x):i-xi. doi: 10.52312/jdrs.2026.2619.