Comparative retrieval analysis of antioxidant polyethylene: Bonding of vitamin-E does not reduce in-vivo surface damage

With the Persona® knee system a new polyethylene formulation incorporating vitamin-E which aims to reduce oxidation and maintain wear resistance was introduced. Although in-vitro studies have demonstrated positive efects of the vitamin-E antioxidants on UHMWPE, no retrieval study has looked at polyethylene damage of this system yet.