The influence of cartilage surface topography on fluid flow in the intra-articular gap. Issue 3 (17th February 2017)

• Record Type: Journal Article
• Authors: Wu, Yabin; Ferguson, Stephen J.
• Is Part Of: Computer methods in biomechanics and biomedical engineering. Volume 20:Issue 3(2017)
• Page Start: 250
• Page End: 259
• Publication Date: 2017-02-17
• Subjects: Cartilage roughness -- synovial fluid -- joint lubrication -- intra-articular gap flow -- CFD; Biomechanics -- Data processing -- Periodicals; Biomedical engineering -- Periodicals; Biomechanics -- Periodicals; Biomedical Engineering -- methods -- Periodicals; Computing Methodologies -- Periodicals; 612.7
• DOI: 10.1080/10255842.2016.1215438
• Languages: English
• ISSNs: 1025-5842

Abstract

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.