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Abstract
Background and purpose The appropriate fixation method for hemiarthroplasty of the hip as it relates to implant survivorship and patient mortality is a matter of ongoing debate. We examined the influence of fixation method on revision rate and mortality.
Methods We analyzed approximately 25,000 hemiarthroplasty cases from the AOA National Joint Replacement Registry. Deaths at 1 day, 1 week, 1 month, and 1 year were compared for all patients and among subgroups based on implant type.
Results Patients treated with cemented monoblock hemiarthroplasty had a 1.7-times higher day-1 mortality compared to uncemented monoblock components (p < 0.001). This finding was reversed by 1 week, 1 month, and 1 year after surgery (p < 0.001). Modular hemiarthroplasties did not reveal a difference in mortality between fixation methods at any time point.
Interpretation This study shows lower (or similar) overall mortality with cemented hemiarthroplasty of the hip.
DJC prepared and edited the manuscript. SLW conceived the study, and prepared and edited the manuscript. NLP performed the statistical analysis and edited the manuscript. SEG edited the manuscript. PR supervised the statistical analysis and edited the manuscript. RWC conceived the study and edited the manuscript.
No competing interests declared.