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首页> 外文期刊>Acta biomaterialia >Characterization of polyethylene wear particle: The impact of methodology
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Characterization of polyethylene wear particle: The impact of methodology

机译：聚乙烯磨损颗粒的表征：方法学的影响

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Due to the prevalence of problems caused by wear particles, the reduced durability of total joint replacements is well documented. The characterization of wear debris enables the size and morphology of these wear particles to be measured and provides an assessment of the biological response in vivo. However, the impact of different methodologies of particle analysis is not yet clear. Hence, the aim of this investigation was to analyze the influence of different particle characterization methods performed by three research centers within the scope of a "round robin test". To obtain knowledge about possible pitfalls, single steps of the particle characterization process (storage, pore size of the filter, coating durations by gold sputtering and scanning electron microscopy (SEM) magnification) were analyzed. The round robin test showed significant differences between the research groups, especially for the morphology of the particles. The SEM magnification was identified as having the greatest influence on the size and shape of the particles, followed by the storage conditions of the wear particle containing lubricant. Gold sputter coating and filter pore size also exhibit significant effects. However, even though they are statistically significant, it should be emphasized that the differences are small. In conclusion, particle characterization is a complex analytical method with a multiplicity of influencing factors. It becomes apparent that a comparison of wear particle results between different research groups is challenging.
机译：由于普遍存在由磨损颗粒引起的问题，因此有充分记载了更换全接头的耐久性下降。磨损碎片的特征使得能够测量这些磨损颗粒的尺寸和形态，并提供对体内生物反应的评估。但是，粒子分析的不同方法的影响尚不清楚。因此，本研究的目的是在“循环试验”的范围内分析由三个研究中心进行的不同颗粒表征方法的影响。为了获得有关可能出现的缺陷的知识，分析了颗粒表征过程的单个步骤（存储，过滤器的孔径，通过金溅射和扫描电子显微镜（SEM）放大倍数得出的涂层持续时间）。循环试验表明研究组之间存在显着差异，尤其是在颗粒形态方面。 SEM放大倍数被认为对颗粒的尺寸和形状影响最大，其次是含润滑剂的磨损颗粒的储存条件。金溅射涂层和过滤器孔径也显示出显着效果。但是，即使它们在统计上是重要的，也应强调差异很小。总之，颗粒表征是一种复杂的分析方法，具有多种影响因素。显然，不同研究组之间的磨损颗粒结果比较是具有挑战性的。

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