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Updated: Aug 8, 2026
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An Experimental and Finite Element Protocol to Investigate the Transport of Neutral and Charged Solutes across Articular Cartilage
Published on: April 23, 2017
Depth-dependent compressive equilibrium properties of articular cartilage explained by its composition
W Wilson1, J M Huyghe, C C van Donkelaar
1Department of Biomedical Engineering, Eindhoven University of Technology, WH 4.108, PO Box 513, 5600, Eindhoven, MB, The Netherlands.
Biomechanics and Modeling in Mechanobiology
|May 20, 2006
Summary
Articular cartilage
Area of Science:
- Biomechanics
- Biomaterials Science
- Tissue Engineering
Background:
- Articular cartilage exhibits depth-dependent compressive properties.
- The origin of these properties (composition vs. material variation) is debated.
Purpose of the Study:
- To investigate if depth-dependent composition alone explains cartilage's mechanical behavior.
- To test a fibril-reinforced poroviscoelastic swelling model incorporating compositional factors.
Main Methods:
- Expanded a fibril-reinforced poroviscoelastic swelling model.
- Included intra- and extra-fibrillar water content and solid fraction.
- Compared model predictions with literature experimental data.
Main Results:
- The model successfully predicted typical depth-dependent cartilage behavior.
- Effective aggregate modulus showed strain-dependent behavior, varying with depth.
- Depth-dependent behavior was explained by compositional variations.
Conclusions:
- Articular cartilage's depth-dependent mechanical properties arise solely from its composition.
- This eliminates the need to assume depth-varying material properties of constituents.
- Findings are crucial for understanding cartilage mechanics, damage, and tissue engineering.
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