Development of UHMWPE-Vitamin E Knee Components
نویسندگان
چکیده
منابع مشابه
Vitamin E-blended UHMWPE with a Gradient Vitamin E Concentration
INTRODUCTION: Vitamin E-stabilized, radiation cross-linked ultra-high molecular weight polyethylene (UHMWPE) is used in total joint arthroplasty as a bearing surface with low wear and improved mechanical properties compared to irradiated and melted UHMWPE [1]. Vitamin E stabilizes the residual free radicals trapped in the material after irradiation and ensures oxidative resistance, thus resulti...
متن کاملReduction of Total Knee Replacement Wear with Vitamin E doped highly cross linked UHMWPE
Introduction: Ultra high molecular weight polyethylene (UHMWPE) is a common bearing component in Total Knee Replacement (TKR) implants, and its susceptibility to wear continues to be the long-term limiting factor in the life of these implants. Novel material modifications have been introduced to reduce UHMWPE wear rates and thus improve the life of TKRs. Radiation and crosslinking of UHMWPE hav...
متن کاملTrace concentrations of vitamin E protect radiation crosslinked UHMWPE from oxidative degradation.
The effect of very low concentrations of Vitamin E on the stability and mechanical behavior of UHMWPE remains unknown. We tested the hypothesis that the oxidation resistance of Vitamin E-blended UHMWPE would be influenced by trace doses of antioxidant, resin, and radiation treatment. Trace concentrations (< or =500 ppm w/w%) of alpha-tocopherol (Vitamin E) were blended separately with GUR 1020 ...
متن کاملMicrostructure, thermooxidation and mechanical behavior of a novel highly linear, vitamin E stabilized, UHMWPE.
A novel, vitamin E-stabilized, medical grade ultra-high molecular polyethylene, MG003 (DSM Biomedical; The Netherlands), has been very recently introduced for use in total joint replacements. This homopolymer resin features average molecular weight similar to that of conventional GUR 1050 resin (5.5-6*10(6)g/mol), but a higher degree of linearity. The aim of this study was to characterize the m...
متن کاملOxidation and Oxidation Potential of Radiation Cross-linked Vitamin E/UHMWPE Blends
Introduction: A Vitamin E-stabilized, radiation cross-linked UHMWPE was developed to maintain oxidative resistance while eliminating the need for post-irradiation melting, which can result in lowered fatigue strength [1]. While diffusion after irradiation is used for introducing Vitamin E into UHMWPE, blending Vitamin E with UHMWPE resin and subsequently irradiating the consolidated mixture is ...
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ژورنال
عنوان ژورنال: Kobunshi
سال: 2007
ISSN: 0454-1138,2185-9825
DOI: 10.1295/kobunshi.56.763