Kleeman L, et al. - This trial was aimed to evaluate whether metal-on-metal (MoM) implants were related to higher complication and revision rates as compared to other hip bearings in the Medicare cohort. In the study population, higher revision rates were noted with the metal-on-metal implant (5.28%) when compared to metal-on-polyethylene (4.28%) and ceramic-on-polyethylene (3.52%) implants. As per the findings, both complication and revision rates were comparable to ceramic-on-ceramic implants.