. Author manuscript; available in PMC: 2013 Mar 1.

Published in final edited form as: Biomech Model Mechanobiol. 2011 Jul 12;11(3-4):493–503. doi: 10.1007/s10237-011-0328-9

Table 1.

Model-fit in the circumferential and axial directions. The material properties are provided for the fibers and the normal FMI for the M+F and the M+F+N models. Statistical analysis was only performed on the M+F+N model.

	Circumferential-Axial Directions
	Model-fit				Model Parameters
	R²-Circ	R²-Axial	Bias (MPa)	Resid SD (MPa)	c₄ (MPa)	c₅	c₆ (MPa)
M + F	0.90	0.65	−0.0292	0.1083	3.58 (2.23, 4.20)	63.9 (18.2, 93.6)	N/A
M + F + N	0.92	0.93	−0.0030	0.0573	2.05 (1.55, 3.14)	99.6^* (37.7, 133.2)	2.64^‡ (1.12, 4.25)

denotes a significant correlation with degeneration and

^‡

denotes a trend.