Hip simulator study of wear characteristics of UHMWPE liner

全髋关节置换术中使用的超高分子量聚乙烯（UHMWPE）内衬。近年来，内衬的厚度越来越薄，直径越来越大，活动范围越来越大。在本研究中，在标准模拟器测试条件下，使用3.5/4.0 mm厚度和44 mm直径的PE内衬进行髋关节模拟器测试，最多进行500万次循环。与未掺杂的PE内衬相比，掺杂0.1% α-生育酚（0.1%重量）的髋臼杯没有磨损优势。

The ultra highly molecular weight polyethylene (UHMWPE) liner used in total hip replacement. Recently, thinning of thickness and large-diameter of liner is progressing for the range of motion improved. In this study, hip simulator test had run by using 3.5/4.0mm thickness 44mm diameter PE liner under standard simulator test conditionsup to 5 million cycles. Compared to non doped PE liner, There was no wear advantage related to 0.1% alpha-tocopheral (0.1% by weight) doped cup.