Transversely isotropic material characterization of the human anterior longitudinal ligament.
The present work represents the first study to report transversely isotropic material parameters for the human anterior longitudinal ligament (ALL) in the thoraco-lumbar spine. Force-deformation data from multi-axial testing was collected from 30 cadaveric spine test specimens using an anisotropic quarter punch test technique. The experimental data was fit to a commonly used anisotropic soft tissue material model using an FEA system identification technique. The material model correlated well with the experimental response (R(2)≥0.98). The constitutive parameter values, as well as the nonlinear anisotropic stress-strain response of the ALL specimens are reported to facilitate application to biomechanical models (including finite element models) of the spine.
['Hortin|Mitchell|M|', 'Graham|Sarah|S|', 'Boatwright|Kara|K|', 'Hyoung|Peter|P|', 'Bowden|Anton|A|']
D000328:Adult D016880:Anisotropy D001696:Biomechanical Phenomena D005260:Female D020342:Finite Element Analysis D006801:Humans D017846:Longitudinal Ligaments D008159:Lumbar Vertebrae D008422:Materials Testing D055595:Mechanical Phenomena D013904:Thoracic Vertebrae
Anterior longitudinal ligament Biomechanics Anisotropic punch test Finite element analysis Spinal ligaments