Development and kinematic verification of a finite element model for the lumbar spine: Application to disc degeneration

The knowledge of the lumbar spine biomechanics is essential for clinical applications. Due to the difficulties to experiment on living people and the irregular results published, simulation based on finite elements (FE) has been developed, making it possible to adequately reproduce the biomechanics...

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Authors: Ibarz, E., Herrera, A., Más, Y., Rodríguez-Vela, J., Cegoñino, J., Puértolas, S., Gracia, L.
Format: article
Status:Published version
Publication Date:2013
Country:España
Institution:Universidad de Zaragoza
Repository:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:57729
Online Access:http://zaguan.unizar.es/record/57729
Access Level:Open access
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spelling Development and kinematic verification of a finite element model for the lumbar spine: Application to disc degenerationIbarz, E.Herrera, A.Más, Y.Rodríguez-Vela, J.Cegoñino, J.Puértolas, S.Gracia, L.The knowledge of the lumbar spine biomechanics is essential for clinical applications. Due to the difficulties to experiment on living people and the irregular results published, simulation based on finite elements (FE) has been developed, making it possible to adequately reproduce the biomechanics of the lumbar spine. A 3D FE model of the complete lumbar spine (vertebrae, discs, and ligaments) has been developed. To verify the model, radiological images (X-rays) were taken over a group of 25 healthy, male individuals with average age of 27.4 and average weight of 78.6 kg with the corresponding informed consent. A maximum angle of 34.40° is achieved in flexion and of 35.58° in extension with a flexion-extension angle of 69.98°. The radiological measurements were 33.94 ± 4.91°, 38.73 ± 4.29°, and 72.67°, respectively. In lateral bending, the maximum angles were 19.33° and 23.40 ± 2.39, respectively. In rotation a maximum angle of 9.96° was obtained. The model incorporates a precise geometrical characterization of several elements (vertebrae, discs, and ligaments), respecting anatomical features and being capable of reproducing a wide range of physiological movements. Application to disc degeneration (L5-S1) allows predicting the affection in the mobility of the different lumbar segments, by means of parametric studies for different ranges of degeneration.2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://zaguan.unizar.es/record/57729reponame:Zaguán. Repositorio Digital de la Universidad de Zaragozainstname:Universidad de ZaragozaInglésinfo:eu-repo/semantics/openAccessoai:zaguan.unizar.es:577292026-05-29T13:59:51Z
dc.title.none.fl_str_mv Development and kinematic verification of a finite element model for the lumbar spine: Application to disc degeneration
title Development and kinematic verification of a finite element model for the lumbar spine: Application to disc degeneration
spellingShingle Development and kinematic verification of a finite element model for the lumbar spine: Application to disc degeneration
Ibarz, E.
title_short Development and kinematic verification of a finite element model for the lumbar spine: Application to disc degeneration
title_full Development and kinematic verification of a finite element model for the lumbar spine: Application to disc degeneration
title_fullStr Development and kinematic verification of a finite element model for the lumbar spine: Application to disc degeneration
title_full_unstemmed Development and kinematic verification of a finite element model for the lumbar spine: Application to disc degeneration
title_sort Development and kinematic verification of a finite element model for the lumbar spine: Application to disc degeneration
dc.creator.none.fl_str_mv Ibarz, E.
Herrera, A.
Más, Y.
Rodríguez-Vela, J.
Cegoñino, J.
Puértolas, S.
Gracia, L.
author Ibarz, E.
author_facet Ibarz, E.
Herrera, A.
Más, Y.
Rodríguez-Vela, J.
Cegoñino, J.
Puértolas, S.
Gracia, L.
author_role author
author2 Herrera, A.
Más, Y.
Rodríguez-Vela, J.
Cegoñino, J.
Puértolas, S.
Gracia, L.
author2_role author
author
author
author
author
author
description The knowledge of the lumbar spine biomechanics is essential for clinical applications. Due to the difficulties to experiment on living people and the irregular results published, simulation based on finite elements (FE) has been developed, making it possible to adequately reproduce the biomechanics of the lumbar spine. A 3D FE model of the complete lumbar spine (vertebrae, discs, and ligaments) has been developed. To verify the model, radiological images (X-rays) were taken over a group of 25 healthy, male individuals with average age of 27.4 and average weight of 78.6 kg with the corresponding informed consent. A maximum angle of 34.40° is achieved in flexion and of 35.58° in extension with a flexion-extension angle of 69.98°. The radiological measurements were 33.94 ± 4.91°, 38.73 ± 4.29°, and 72.67°, respectively. In lateral bending, the maximum angles were 19.33° and 23.40 ± 2.39, respectively. In rotation a maximum angle of 9.96° was obtained. The model incorporates a precise geometrical characterization of several elements (vertebrae, discs, and ligaments), respecting anatomical features and being capable of reproducing a wide range of physiological movements. Application to disc degeneration (L5-S1) allows predicting the affection in the mobility of the different lumbar segments, by means of parametric studies for different ranges of degeneration.
publishDate 2013
dc.date.none.fl_str_mv 2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://zaguan.unizar.es/record/57729
url http://zaguan.unizar.es/record/57729
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv
publisher.none.fl_str_mv
dc.source.none.fl_str_mv reponame:Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname:Universidad de Zaragoza
instname_str Universidad de Zaragoza
reponame_str Zaguán. Repositorio Digital de la Universidad de Zaragoza
collection Zaguán. Repositorio Digital de la Universidad de Zaragoza
repository.name.fl_str_mv
repository.mail.fl_str_mv
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