Wear of moderately cross-linked polyethylene in fixed-bearing total knee replacements
Wear of moderately cross-linked polyethylene in fixed-bearing total knee replacements
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DOI：
10.1177/0954411912445265
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发表时间：
2012-01-01
期刊：
影响因子：
1.8
通讯作者：
Fisher, John
中科院分区：
文献类型：
--
作者：
Brockett, Claire L.;Jennings, Louise M.;Fisher, John
交联聚乙烯已被引入到全关节置换术中，以提高耐磨性。尽管高交联聚乙烯在全髋关节置换术中的性能在临床和实验上得到了充分证明，但随着辐照的增加，机械性能的降低是全膝关节置换术应用的一个问题。本研究旨在研究中度交联聚乙烯材料在固定平台全膝关节置换术中的磨损性能。该研究使用两种股骨几何结构进行，传统交叉韧带保留型股骨和高屈曲股骨几何结构。在标准步态条件下，股骨几何结构似乎对膝关节置换的磨损没有影响。在600万次循环磨损研究中，与传统聚乙烯相比，中度交联聚乙烯的磨损体积显著减少。本研究表明，在固定平台全膝关节置换术中使用中度交联聚乙烯可为全膝关节置换术提供低磨损选择。
Cross-linked polyethylene has been introduced into total joint replacement to improve wear resistance. Although the performance of highly cross-linked polyethylene is well documented clinically and experimentally for total hip replacements, the reduction in mechanical properties with increasing irradiation is of concern for application to total knee replacement. The aim of this study was to investigate the wear performance of a moderately cross-linked polyethylene material in a fixed-bearing total knee replacement. The study was conducted using two femoral geometries, a conventional cruciate-retaining femoral and a high-flexion femoral geometry. The femoral geometry appeared to have no effect on the wear of the knee replacement under standard gait conditions. A significant reduction in wear volume was measured with the moderately cross-linked polyethylene compared with the conventional polyethylene over a six-million-cycle wear study. This study indicates the use of a moderately cross-linked polyethylene in a fixed-bearing total knee replacement may provide a low wearing option for total knee replacement.