title: A constitutive modeling of the human lumbar intervertebral disc and forward-backward bending simulation.
abstract: This paper presents a constitutive law of the lumbar intervertebral disc to be described mathematically with the finite deformation theory. Mechanical behavior of the cadaveric lumbar disc obtained from continuous cyclic compression-tension tests and continuous cyclic axial torsion tests was formulated by the constitutive equation with a semi-circular shaped model. These equations were formulated with or without taking the nucleus pulposus into account. It was also confirmed that forward-backward bending behavior of the disc could be simulated numerically from these equations.
authors.affiliation: Laboratory of Biomechanical Design, Graduate School of Engineering, Hokkaido University, Sapporo, Japan. tadano@md.mech2.hokudai.ac.jp
authors.forename: S
authors.initials: S
authors.lastname: Tadano
authors.forename: K
authors.initials: K
authors.lastname: Katagiri
authors.forename: S
authors.initials: S
authors.lastname: Umehara
authors.forename: T
authors.initials: T
authors.lastname: Ukai
mesh_terms: D001696:Biomechanical Phenomena; D005260:Female; D006801:Humans; D066298:In Vitro Techniques; D007403:Intervertebral Disc / Q000502:physiology*; D008159:Lumbar Vertebrae / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D017711:Nonlinear Dynamics; D013314:Stress, Mechanical; D016474:Weight-Bearing / Q000502:physiology