- Elliott, Dawn M. and LeRoux, Michelle A. and Laursen, Tod A. and Setton, Lori A., Formulation of a continuum anisotropic model for the anulus fibrosus in tension,
American Society of Mechanical Engineers, Bioengineering Division (Publication) BED, vol. 36
pp. 165 - 166 .
(last updated on 2007/04/10)
The anulus fibrosus (AF) of the intervertebral disc is a highly structured material made up of alternating tissue layers with collagen fibers oriented +30° and -30° to the circumferential axis. Special organization of the AF gives rise to strongly anisotropic behaviors which may contribute to its mechanical function. A continuum formulation for the AF as a linear orthotropic material with a complete set of material properties is proposed. Finite element implementation of the model is also developed to further compare model predictions with experimental findings for the AF in tension.
Tissue;Anisotropy;Aspect ratio;Strain;Stresses;Mathematical models;Finite element method;Elastic moduli;