Scholes S C, Unsworth A
Centre for Biomedical Engineering, School of Engineering, Durham University, Durham, UK.
Proc Inst Mech Eng H. 2007 Apr;221(3):281-9. doi: 10.1243/09544119JEIM224.
In an attempt to prolong the lives of rubbing implantable devices, several 'new' materials have been examined to determine their suitability as joint couplings. Tests were performed on a multidirectional pin-on-plate machine to determine the wear of both pitch and PAN (polyacrylonitrile)-based carbon fibre reinforced-polyetheretherketone (CFR-PEEK-OPTIMA) pins articulating against both BioLox Delta and BioLox Forte plates (ceramic materials). Both reciprocation and rotational motion were applied to the samples. The tests were conducted using 24.5 per cent bovine serum as the lubricant (protein concentration 15 g/l). Although all four material combinations gave similar low wear with no statistically significant difference (p > 0.25), the lowest average total wear of these pin-on-plate tests was provided by CFR-PEEK-OPTIMA pitch pins versus BioLox Forte plates. This was much lower than the wear produced by conventional joint materials (metal-on-polyethylene) and metal-on-metal combinations when tested on the pin-on-plate machine. This therefore indicates optimism that these PEEK-OPTIMA-based material combinations may perform well in joint applications.
为延长摩擦植入式装置的使用寿命，已对几种“新型”材料进行了研究，以确定它们作为关节连接件的适用性。在多向销盘试验机上进行了测试，以确定聚四氟乙烯（PTFE）销和基于聚丙烯腈（PAN）的碳纤维增强聚醚醚酮（CFR-PEEK-OPTIMA）销与BioLox Delta和BioLox Forte板（陶瓷材料）相互摩擦时的磨损情况。对样品施加了往复运动和旋转运动。测试使用24.5%的牛血清作为润滑剂（蛋白质浓度为15 g/l）。尽管所有四种材料组合的磨损都很低，且无统计学显著差异（p>0.25），但在这些销盘试验中，CFR-PEEK-OPTIMA聚四氟乙烯销与BioLox Forte板的平均总磨损最低。这远低于在销盘试验机上测试时传统关节材料（金属对聚乙烯）和金属对金属组合产生的磨损。因此，这表明基于PEEK-OPTIMA的这些材料组合在关节应用中可能表现良好，令人乐观。
