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. Author manuscript; available in PMC: 2008 Jan 23.

Published in final edited form as: J Biomech. 2007 Jun 29;40(15):3438–3447. doi: 10.1016/j.jbiomech.2007.05.023

(a) Results from present finite element tests of material behavior of cylindrical plugs loaded in unconfined compression, compared to corresponding published results (b) from Park et al. (Park et al., 2004, by permission¹). The stress-strain curves from Park et al. are for one typical specimen, which was utilized to demonstrate the rate-dependence and hysteresis of the cartilage. However, this particular specimen is approximately 1.8 times softer than their reported average material behavior, suggesting an even closer correspondence of the present FE results.

¹Reprinted from Osteoarthritis and Cartilage, Volume 12, Park S, Hung CT, Ateshian GA, “Mechanical response of bovine articular cartilage under dynamic unconfined compression loading at physiological stress levels.” pp. 65-73, Copyright 2004, with permission from Osteoarthritis Research Society International.

(a) Results from present finite element tests of material behavior of cylindrical plugs loaded in unconfined compression, compared to corresponding published results (b) from Park et al. (Park et al., 2004, by permission¹). The stress-strain curves from Park et al. are for one typical specimen, which was utilized to demonstrate the rate-dependence and hysteresis of the cartilage. However, this particular specimen is approximately 1.8 times softer than their reported average material behavior, suggesting an even closer correspondence of the present FE results.

¹Reprinted from Osteoarthritis and Cartilage, Volume 12, Park S, Hung CT, Ateshian GA, “Mechanical response of bovine articular cartilage under dynamic unconfined compression loading at physiological stress levels.” pp. 65-73, Copyright 2004, with permission from Osteoarthritis Research Society International.