This special issue of JBMR (B), entitled, "Advances in UHMWPE Biomaterials" includes 11 papers that were presented at the 5th International UHMWPE Meeting, which was convened at Drexel University on September 22-23, 2011. The purpose of the meeting was to bring together engineers, scientists, and clinicians from academia and industry and to present leading edge research on the development and applications of medical grade ultra-high molecular weight polyethylene used in total joint arthroplasty. The focus of the meeting, reflected in the papers of this special issue, was on retrieval studies of highly crosslinked UHMWPE, with a special emphasis on the performance of knee arthroplasty; advances in Vitamin E and antioxidant technologies for UHMWPE; as well as advances in biologic aspects of UHMWPE wear debris.
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