The optimum clearance between the bearing surfaces of hip arthroplasties is unknown. Theoretically, to minimize wear, it is understood that clearances must be low enough to maintain optimal contact pressure and fluid film lubrication, while being large enough to allow lubricant recovery and reduce contact patch size. This study aimed to identify the relationship between diametrical clearance and volumetric wear, through the analysis of retrieved components.

中文翻译：

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径向间隙是否会影响 Pinnacle 髋关节植入物的磨损？

髋关节置换术轴承表面之间的最佳间隙是未知的。从理论上讲，为了最大限度地减少磨损，可以理解，间隙必须足够低以保持最佳接触压力和流体膜润滑，同时又足够大以允许润滑剂回收并减小接触面尺寸。本研究旨在通过分析检索到的部件来确定径向间隙和体积磨损之间的关系。