Article ; Online: Immature bovine cartilage wear is due to fatigue failure from repetitive compressive forces and not reciprocating frictional forces.
2023 Volume 31, Issue 12, Page(s) 1594–1601
Abstract: Objective: Wear of articular cartilage is not well understood. We hypothesize that cartilage wears due to fatigue failure in repetitive compression instead of reciprocating friction.: Design: This study compares reciprocating sliding of immature ... ...
Abstract | Objective: Wear of articular cartilage is not well understood. We hypothesize that cartilage wears due to fatigue failure in repetitive compression instead of reciprocating friction. Design: This study compares reciprocating sliding of immature bovine articular cartilage against glass in two testing configurations: (1) a stationary contact area configuration (SCA), which results in static compression, interstitial fluid depressurization, and increasing friction coefficient during reciprocating sliding, and (2) a migrating contact area configuration (MCA), which maintains pressurization and low friction while producing repetitive compressive loading in addition to reciprocating sliding. Contact pressure, sliding duration, and sliding distance were controlled to be similar between test groups. Results: SCA tests exhibited an average friction coefficient of μ=0.084±0.032, while MCA tests exhibited a lower average friction coefficient of μ=0.020±0.008 (p<10 Conclusions: The greatest wear was observed in the group with lowest friction coefficient, subjected to cyclical instead of static compression, implying that friction is not the primary driver of cartilage wear. Delamination between superficial and middle zones implies the main mode of wear is fatigue failure under cyclical compression, not fatigue or abrasion due to reciprocating frictional sliding. |
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MeSH term(s) | Animals ; Cattle ; Friction ; Cartilage, Articular ; Extracellular Fluid ; Pressure ; Stress, Mechanical |
Language | English |
Publishing date | 2023-08-24 |
Publishing country | England |
Document type | Journal Article |
ZDB-ID | 1167809-4 |
ISSN | 1522-9653 ; 1063-4584 |
ISSN (online) | 1522-9653 |
ISSN | 1063-4584 |
DOI | 10.1016/j.joca.2023.08.008 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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