Human anulus fibrosus behaves nonlinearly and isotropically in finite deformation confined compression

James C. Iatridis, Lori A. Setton, Robert J. Foster, Bernard A. Rawlins, Mark Weidenbaum, Van C. Mow

Research output: Contribution to conferencePaperpeer-review

10 Scopus citations

Abstract

Human anulus fibrosus (AF) of the intervertebral disk exhibits nonlinear and anisotropic behavior in tension. This paper investigates both anisotropic and nonlinear behaviors of the AF in the confined compression testing configuration under conditions of finite deformation. The finite deformation formulation of the biphasic theory is used to described the experimental stress-relaxation behavior of AF under conditions of large deformation. In this formulation, the equilibrium elastic behavior is described by two material parameters: the aggregate modulus at zero strain (HAo) and the nonlinear stiffening coefficient (β).

Original languageEnglish
Pages251-252
Number of pages2
StatePublished - 1995
EventProceedings of the 1995 Bioengineering Conference - Beever Creek, CO, USA
Duration: Jun 28 1995Jul 2 1995

Conference

ConferenceProceedings of the 1995 Bioengineering Conference
CityBeever Creek, CO, USA
Period06/28/9507/2/95

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