- Setton, L.A. and Mow, V.C., Generalized biphasic poroviscoelastic model for articular cartilage: Theory and experiments,
American Society of Mechanical Engineers, Bioengineering Division (Publication) BED, vol. 22
pp. 589 - 592 .
(last updated on 2007/04/10)
The shear and bulk deformation viscoelastic spectrums of the solid matrix of articular cartilage has been determined using the biphasic poroviscoelastic theory in combination with data from two independent stress-relaxation experiments in compression and pure shear. The results show that viscoelasticity of the solid matrix in bulk deformation exerts a strong influence on the compressive behavior of cartilage for short times after rapid loading. For long time periods, shear and bulk viscoelasticity contribute almost equally to the deformational response of the tissue. Results indicate that the model for studying cartilage behavior should reflect the particular time scales and configuration of the specific test. The method presented in this study should allow investigators to choose the appropriate biphasic model to represent cartilage deformational behavior in studying diarthrodial joint biomechanics.
Viscoelasticity;Porosity;Strength of materials;Shear stress;Deformation;Anelastic relaxation;Loads (forces);Mechanical testing;Joints (anatomy);Mathematical models;