A new pin-on-disk wear testing method for simulating wear of polyethylene on cobalt-chrome alloy in total hip arthroplasty
A new pin-on-disk wear testing method for simulating wear of polyethylene on cobalt-chrome alloy in total hip arthroplasty
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DOI：
10.1054/arth.2001.23718
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发表时间：
2001-08-01
影响因子：
3.5
通讯作者：
Harris, WH
中科院分区：
文献类型：
--
作者：
Bragdon, CR;O'Connor, DO;Harris, WH
髋关节模拟器研究表明，超高分子量聚乙烯对钴合金头部的磨损取决于油的磨损路径，特别是油在不同方向的叠加运动中以线性磨损方向为主的组合。我们假设在销盘测试中，为了产生真实的磨损率，多向运动是必要的。为了评估这一假设，开发了一种新的销盘测试仪，能够单向和双向运动。单向运动不会产生明显的磨损。矩形运动产生的磨损率、表面形态和磨损颗粒与人类髋臼标本一致。1 Hz和2 Hz的结果是相似的。
Hip simulator studies show that the wear Of Ultra-high molecular weight polyethylene against a cobalt alloy head depends oil the wear path, especially the combination of a predominantly linear wear direction Oil Which is Superimposed motions in different directions. We postulated that Multidirectional motion was necessary to generate realistic wear rates in pin-on-disk testing. To assess this hypothesis, a new pin-on-disk tester was developed, capable of unidirectional ind bidirectional motion. Unidirectional motion produced no detectable wear. The rectangular motion produced wear rates, Surface morphologies, and wear particles consistent with human acetabular specimens. The results for 1 Hz and 2 Hz were similar.