ORS 2012 Poster - Material Performance of 1st and 2nd Generation HXLPEs for THA
The purpose of this multicenter retrieval study was to assess the oxidative stability, mechanical behavior, wear and reasons for revision of 2nd generation HXLPEs and compare them to our ongoing retrieval collection of 1st generation annealed and remelted HXLPEs. Researchers hypothesized the sequentially annealed components would exhibit wear rates similar to 1st generation HXLPEs. It was also hypothesized that 2nd generation HXLPEs would be more oxidatively stable than 1st generation HXLPEs. 431 hip liners were consecutively retrieved during revision surgeries at 9 surgical centers and continuously analyzed over the past 10 years in a prospective, multicenter study of THA revision outcomes and retrieval analysis. This ongoing study continues to evaluate chemical and mechanical properties and reasons for revision among clinically relevant HXLPEs used in total hip replacement, including 2nd generation HXLPEs. The oxidative stability and mechanical behavior of these materials was found to be formulation dependent.
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