57729 20170504101429.0 doi 10.1155/2013/705185 sideral 81373 ART-2013-81373 eng (orcid)0000-0003-0785-4132 Ibarz, E. Universidad de Zaragoza Development and kinematic verification of a finite element model for the lumbar spine: Application to disc degeneration 2013 Access copy available to the general public Unrestricted 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. info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 0.0 2013 MEDICINE, RESEARCH & EXPERIMENTAL BIOTECHNOLOGY & APPLIED MICROBIOLOGY info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion (orcid)0000-0002-8643-7558 Herrera, A. Universidad de Zaragoza Más, Y. Rodríguez-Vela, J. Universidad de Zaragoza (orcid)0000-0002-2967-6747 Cegoñino, J. Universidad de Zaragoza (orcid)0000-0002-3613-4209 Puértolas, S. Universidad de Zaragoza (orcid)0000-0001-7944-9625 Gracia, L. Universidad de Zaragoza 1004 830 Universidad de Zaragoza Departamento de Cirugía, Ginecología y Obstetricia Traumatología y Ortopedia 5004 605 Universidad de Zaragoza Departamento de Ingeniería Mecánica Mec. de Medios Contínuos y Teor. de Estructuras 2013 (2013), [18 pp.] BioMed res. int. BioMed Research International 2314-6133 9285304 http://zaguan.unizar.es/record/57729/files/texto_completo.pdf Versión publicada 8227 http://zaguan.unizar.es/record/57729/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:57729 articulos driver 2017-05-04-10:13:44 ARTICLE