Fine Modeling and Mechanical Analysis of Human Lumbar Spine
Journal: Journal of Clinical Medicine Research DOI: 10.32629/jcmr.v5i1.1793
Abstract
This paper has created a skeletal model of the human lumbar spine and proved its effectiveness. Simulated scenarios when the human body is moving, including forward bending, backward extension, left bending, and left rotation. Compare range of motion, vertebral displacement, annulus fibrosus displacement, endplate displacement, nucleus pulposus displacement, annulus fibrosus stress, endplate stress, nucleus pulposus stress, and cortical bone stress. The model of this study was based on anatomical principles for detailed drawing of the human lumbar spine. ROMs under different physiological motions including flexion, extension, and lateral bending with 300N preload and 3.75N·m moment were measured under the normal finite element model. The degrees of flexion of L1-S1 were 17.204°. The degrees of extension of L1-S1 were 13.959°. The degrees of lateral bending of L1-S1 were 10.326°, axial rotation were 6. 466°. The maximum stress for intervertebral disc flexion is 1.4285MPa. The maximum stress of the extension intervertebral disc is 1.1296MPa. The maximum stress of the intervertebral disc with lateral bending is 1.7589MPa. The maximum stress of the axial rotating intervertebral disc is 1. 1698MPa. After comparing with classical literature, the model of this study meets clinical research standards and may be a good choice for clinical surgical analysis.
Keywords
finite element model, stress cloud map, lumbar spine structure, intervertebral disc, ANSYS, biomechanics
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[4]Goel, V. K., et al., Finite element study of matched paired posterior disc implant and dynamic stabilizer (360 motion preservation system). SAS journal, 2007. 1(1): p. 55-62.
[5]Ayturk, U. M. and C. M. Puttlitz, Parametric convergence sensitivity and validation of a finite element model of the human lumbar spine. Computer methods in biomechanics and biomedical engineering, 2011. 14(8): p. 695-705.
[6]Lu, Y., Z. Yang, and Y. Wang, A critical review on the three-dimensional finite element modelling of the compression therapy for chronic venous insufficiency. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 2019. 233(11): p. 1089-1099.
[7]Zhang, Q., et al., Effect of displacement degree of distal chevron osteotomy on metatarsal stress: A finite element method. Biology, 2022. 11(1): p. 127.
[8]Kluess, D., Finite element analysis in orthopaedic biomechanics, in Finite element analysis. 2010, IntechOpen.
[9]Shirazi-Adl, A., Analysis of role of bone compliance on mechanics of a lumbar motion segment. 1994.
[10]Kiapour, A., et al., Kinematic effects of a pedicle-lengthening osteotomy for the treatment of lumbar spinal stenosis. Journal of Neurosurgery: Spine, 2012. 17(4): p. 314-320.
[11]Kiapour, A. and V. Goel, Biomechanics of a novel lumbar total motion segment preservation system: a computational and in vitro study. Bonezone, 2009. 8: p. 86-90.
[12]Goel, V. K., et al., Effects of charite artificial disc on the implanted and adjacent spinal segments mechanics using a hybrid testing protocol. Spine, 2005. 30(24): p. 2755-2764.
[13]Lin, H. -M., et al., Biomechanical comparison of the K-ROD and Dynesys dynamic spinal fixator systems–a finite element analysis. Bio-medical materials and engineering, 2013. 23(6): p. 495-505.
[14]Yamamoto, I., et al., Three-dimensional movements of the whole lumbar spine and lumbosacral joint. Spine, 1989. 14(11): p. 1256-1260.
[15]McMillan, D., et al., Stress distributions inside intervertebral discs: the validity of experimental ‘stress profilometry’. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 1996. 210(2): p. 81-87.
[16]Atlas, S. J. and R. A. Deyo, Evaluating and managing acute low back pain in the primary care setting. Journal of general internal medicine, 2001. 16: p. 120-131.
[17]Chen, C. -S., et al., Stress analysis of the disc adjacent to interbody fusion in lumbar spine. Medical engineering & physics, 2001. 23(7): p. 485-493.
[18]Xu, M., et al. Finite element method-based analysis for effect of vibration on healthy and scoliotic spines. in International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. 2016. American Society of Mechanical Engineers.
[19]Somovilla Gomez, F., et al. A proposed methodology for setting the finite element models based on healthy human intervertebral lumbar discs. in Hybrid Artificial Intelligent Systems: 11th International Conference, HAIS 2016, Seville, Spain, April 18-20, 2016, Proceedings 11. 2016. Springer.
[20]Zhang, Q., et al., Analysis of stress and stabilization in adolescent with osteoporotic idiopathic scoliosis: Finite element method. Computer Methods in Biomechanics and Biomedical Engineering, 2023. 26(1): p. 12-24.
[21]Wilke, H. -J., et al., A universal spine tester for in vitro experiments with muscle force simulation. European Spine Journal, 1994. 3: p. 91-97.
[22]Rohlmann, A., et al., Effect of an internal fixator and a bone graft on intersegmental spinal motion and intradiscal pressure in the adjacent regions. European spine journal, 2001. 10: p. 301-308.
[23]Zander, T., et al., Estimation of muscle forces in the lumbar spine during upper-body inclination. Clinical Biomechanics, 2001. 16: p. S73-S80.
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