Femoral Head Penetration of Vitamin E-Infused Highly Cross-Linked Polyethylene Liners A Randomized Radiostereometric Study of Seventy Hips Followed for Two Years

摘要

Background: Highly cross-linked polyethylene infused with vitamin E (E-poly) was developed to increase oxidative resistance without affecting mechanical properties. We evaluated this type of polyethylene in a randomized clinical study that used radiostereometric analysis. Our objective was to compare the early-term femoral head penetration of an E-poly liner with that of a heat-treated polyethylene liner, ArComXL. We hypothesized that the clinical outcome at two years following total hip arthroplasty would be unaffected by the choice of polyethylene.