Dual mobility vs ‘jumbo’ femoral heads yield similar results for primary THA

With comparable outcomes to large diameter metal-on-metal femoral heads, dual mobility total hip arthroplasty provides no benefit “beyond that of the large effective head size,” according to published results.
Mitchell Beckert, MD, and colleagues performed a retrospective cohort study that analyzed 1,288 metal-on-metal (MoM) “jumbo” femoral head THAs (Magnum, Zimmer Biomet) and 365 dual mobility (DM) THAs (Active Articulation, Zimmer Biomet) at a single institution between 2005 and 2018. According to the study, average head size in both cohorts was 50 mm. Outcome

With comparable outcomes to large diameter metal-on-metal femoral heads, dual mobility total hip arthroplasty provides no benefit “beyond that of the large effective head size,” according to published results.
Mitchell Beckert, MD, and colleagues performed a retrospective cohort study that analyzed 1,288 metal-on-metal (MoM) “jumbo” femoral head THAs (Magnum, Zimmer Biomet) and 365 dual mobility (DM) THAs (Active Articulation, Zimmer Biomet) at a single institution between 2005 and 2018. According to the study, average head size in both cohorts was 50 mm. Outcome