2022 AAOS Annual Meeting: Oxidized Zirconium vs. Cobalt Chrome Femoral Heads in Total Hip Arthroplasty: A Multicenter Prospective Randomized Controlled Trial with 10 Years Follow Up

262 patients were assessed at the 10 year follow up of this randomized controlled trial comparing Oxidized Zirconium femoral heads with an ultra-high molecular weight polyethylene liner, Oxidized Zirconium femoral heads with a highly cross-linked polyethylene liner, and Cobalt Chrome femoral heads with a highly cross-linked polyethylene liner. Outcomes of interest included liner wear rate, incidence of osteolysis, clinical outcomes and complications. The group that received Oxidized Zirconium femoral heads with an ultra-high molecular weight polyethylene liner had significantly higher rates of liner wear and osteolysis requiring revision compared to the other two groups.