• Darren J Costain, Sarah L Whitehouse, Nicole L Pratt, Stephen E Graves, Philip Ryan, and Ross W Crawford.
• Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia.
• Acta Orthop. 2011 Jun 1;82(3):275-81.

Background And PurposeThe 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.MethodsWe 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.ResultsPatients 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.InterpretationThis study shows lower (or similar) overall mortality with cemented hemiarthroplasty of the hip.

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