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The influence of cartilage surface topography on fluid flow in the intra-articular gap

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  • Yabin Wu
  • Stephen J. Ferguson

Abstract

Self-lubrication of a diarthrodial joint is largely attributed to interstitial fluid pressurisation. However, the retention of synovial fluid within the intra-articular gap may also contribute to lubrication. Fluid flow in the intra-articular gap between two micro-rough cartilage surfaces was simulated with a three-dimensional numerical model. Representative surface roughness parameters were incorporated and their relative influence on gap flow resistance was quantified. Resistance changes with decreasing gap height were explored. Cartilage surface micro-topography improves the retention of viscous synovial fluid in the gap, through increased resistance to tangential flow. Local asperity contact greatly increases resistance through tortuosity of the flow path.

Suggested Citation

  • Yabin Wu & Stephen J. Ferguson, 2017. "The influence of cartilage surface topography on fluid flow in the intra-articular gap," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 20(3), pages 250-259, February.
    • Handle: RePEc:taf:gcmbxx:v:20:y:2017:i:3:p:250-259
    DOI: 10.1080/10255842.2016.1215438
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