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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Wear of composite ceramics in mixed‐material combinations in total hip replacement under adverse edge loading conditions
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Wear of composite ceramics in mixed‐material combinations in total hip replacement under adverse edge loading conditions

机译：在不利边缘负载条件下，在总髋关节置换中的混合材料组合中复合陶瓷的磨损

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Abstract Ceramic composites have performed very well under adverse edge loading conditions when used in like‐on‐like configurations, where the femoral head and acetabular cup are of the same material. The aim of this study was to determine the wear of pure alumina (Al 2 O 3 ), alumina toughened zirconia (ATZ) and zirconia toughened alumina (ZTA) when used in mixed bearing combinations, under edge loading conditions due to translational mal‐positioning. The head‐on‐cup configurations of three ceramic materials were ATZ‐on‐ZTA, ZTA‐on‐ATZ, Al 2 O 3 ‐on‐ATZ, ATZ‐on‐Al 2 O 3 , Al 2 O 3 ‐on‐ZTA, and ZTA‐on‐Al 2 O 3 . They were tested on the Leeds II hip simulator under microseparation conditions. The bedding in and steady state wear rates of ATZ‐on‐ZTA were 1.16mm 3 /million cycles and 0.18mm 3 /million, respectively, and for ATZ‐on‐Al 2 O 3 were 0.66?mm 3 /million cycles and 0.20?mm 3 /million, respectively. The wear rates of the other bearing combinations under these adverse microseparation conditions, Al 2 O 3 ‐on‐ATZ, Al 2 O 3 ‐on‐ZTA, ZTA‐on‐ATZ and ZTA‐on‐Al 2 O 3 were very low with no clear bedding in and steady state phases, and with steady state wear rates lower than 0.11?mm 3 /million. The mixed material combinations tested in this study have shown slightly higher wear rates when compared to ATZ in like‐on‐like configuration reported previously, but superior wear resistance when compared to alumina‐on‐alumina bearings tested previously under the same adverse microseparation conditions. ? 2016 The Authors Journal of Biomedical Materials Research Part B: Applied Biomaterials Published by Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 1361–1368, 2017.
机译：抽象的陶瓷复合材料在使用类似于类似的配置时在不良边缘装载条件下进行，其中股骨头和髋臼杯具有相同的材料。本研究的目的是确定纯氧化铝（Al 2 O 3），氧化铝增韧氧化锆（ATZ）和氧化锆增韧氧化铝（ZTA）的磨损在混合轴承组合中，在边缘加载条件下，由于翻译的混合物定位。三个陶瓷材料的头部杯子配置是ATZ-On-ZTA，ZTA-ON-ATZ，Al 2 O 3-atz，ATZ-On-Al 2 O 3，Al 2 O 3-ZTA ，和ZTA-ON-AL 2 O 3。它们在微疏的条件下在LEEDS II HIP模拟器上进行了测试。 ATZ-On-ZTA的床上用品和稳态磨损率分别为1.16mm 3 /百万个循环，分别为0.18mm 3 /百万，对于ATZ-ON-Al 2 O 3为0.66Ω·mm 3 /百万个循环和0.20分别为3 /百万。在这些不良微疏化条件下，其他轴承组合的磨损率，Al 2 O 3-atz，Al 2 O 3-ZTA，ZTA-ON-ATZ和ZTA-ON-Al 2 O 3非常低没有明确的床上用品和稳态阶段，并且稳定的状态磨损率低于0.11？mm 3 /百万。与先前报道的类似类似的耐磨性相比，该研究中测试的混合材料组合在与先前报道的类似氧化铝轴承相比，与先前的类似氧化铝轴承相比，耐磨性较高的耐磨性略高。还2016年作者杂志研究杂志B部分B：Wiley期刊出版的应用生物材料，Inc。J生物密制Res Part B：苹果生物摩特，105B：1361-1368,2017。

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