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dc.contributor.authorMalandrino, Andrea
dc.contributor.authorNoailly, Jérôme
dc.contributor.authorLacroix, Damien Jerome
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.identifier.citationMalandrino, A.; Noailly, J.; Damien, D. Regional annulus fibre orientations used as a tool for the calibration of lumbar intervertebral disc finite element models. "Computer methods in biomechanics and biomedical engineering", 06 Gener 2011, p. 1-6.
dc.description.abstractThe collagen network of the annulus fibrosus largely controls the functional biomechanics of the lumbar intervertebral discs (IVDs). Quantitative anatomical examinations have shown bundle orientation patterns, possibly coming from regional adaptations of the annulus mechanics. This study aimed to show that the regional differences in annulus mechanical behaviour could be reproduced by considering only fibre orientation changes. Using the finite element method, a lumbar annulus was modelled as a poro-hyperelastic material in which fibres were represented by a direction-dependent strain energy density term. Fibre orientations were calibrated to reproduce the annulus tensile behaviours measured for four different regions: posterior outer, anterior outer, posterior inner and anterior inner. The back-calculated fibre angles and regional patterns as well as the global disc behaviour were comparable with anatomical descriptions reported in the literature. It was concluded that annulus fibre variations might be an effective tool to calibrate lumbar spine IVD and segment models.
dc.format.extent6 p.
dc.publisherGordon and Breach Science Publishers
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshIntervertebral disk
dc.titleRegional annulus fibre orientations used as a tool for the calibration of lumbar intervertebral disc finite element models
dc.subject.lemacDisc intervertebral
dc.subject.lemacElements finits, Mètode dels
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/FP7/249210/EU/Mechanistic and Evolutive Development of Spine Biomechanical Modelling/SEVBIOM
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/FP7/213904/EU/Novel biofunctional high porous polymer scaffolds and techniques controlling angiogenesis for the regeneration and repair of the degenerated intervertebral disc./DISC REGENERATION
local.citation.authorMalandrino, A.; Noailly, J.; Damien, D.
local.citation.publicationNameComputer methods in biomechanics and biomedical engineering

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