Nonlinear finite-element analysis and biomechanical evaluation of the lumbar spine

Christian Wong; P Martin Gehrchen; Tron Darvann; Thomas Kiaer

doi:10.1109/TMI.2003.814783

Nonlinear finite-element analysis and biomechanical evaluation of the lumbar spine

Christian Wong, P Martin Gehrchen, Tron Darvann, Thomas Kiaer

27 Citationer (Scopus)

Abstract

A finite-element analysis (FEA) model of an intact lumbar disc-body unit was generated. The vertebral body of the FEA model consisted of a solid tetrahedral core of trabecular bone surrounded by a cortical shell. The disc consisted of an incompressible nucleus surrounded by nonlinear annulus fibers embedded in a solid ground substance. The purpose was to create a FEA model suitable for clinical purposes as fracture assessment, instrumentation with pedicle screws, and bone remodeling. Testing of the FEA model was performed nonlinear for a number of loading conditions, and the results were compared with experimental data from the literature. The results showed good agreement. The formulation of the FEA model can be justified for the tested loading conditions.

Originalsprog	Engelsk
Tidsskrift	I E E E Transactions on Medical Imaging
Vol/bind	22
Udgave nummer	6
Sider (fra-til)	742-6
Antal sider	5
ISSN	0278-0062
DOI	https://doi.org/10.1109/TMI.2003.814783
Status	Udgivet - 2003

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10.1109/TMI.2003.814783

Citationsformater

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title = "Nonlinear finite-element analysis and biomechanical evaluation of the lumbar spine",

abstract = "A finite-element analysis (FEA) model of an intact lumbar disc-body unit was generated. The vertebral body of the FEA model consisted of a solid tetrahedral core of trabecular bone surrounded by a cortical shell. The disc consisted of an incompressible nucleus surrounded by nonlinear annulus fibers embedded in a solid ground substance. The purpose was to create a FEA model suitable for clinical purposes as fracture assessment, instrumentation with pedicle screws, and bone remodeling. Testing of the FEA model was performed nonlinear for a number of loading conditions, and the results were compared with experimental data from the literature. The results showed good agreement. The formulation of the FEA model can be justified for the tested loading conditions.",

keywords = "Compressive Strength, Computer Simulation, Elasticity, Finite Element Analysis, Humans, Imaging, Three-Dimensional, Intervertebral Disc, Ligaments, Lumbar Vertebrae, Models, Biological, Motion, Nonlinear Dynamics, Stress, Mechanical, Torque",

author = "Christian Wong and Gehrchen, {P Martin} and Tron Darvann and Thomas Kiaer",

year = "2003",

doi = "10.1109/TMI.2003.814783",

language = "English",

volume = "22",

pages = "742--6",

journal = "I E E E Transactions on Medical Imaging",

issn = "0278-0062",

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T1 - Nonlinear finite-element analysis and biomechanical evaluation of the lumbar spine

AU - Wong, Christian

AU - Gehrchen, P Martin

AU - Darvann, Tron

AU - Kiaer, Thomas

PY - 2003

Y1 - 2003

N2 - A finite-element analysis (FEA) model of an intact lumbar disc-body unit was generated. The vertebral body of the FEA model consisted of a solid tetrahedral core of trabecular bone surrounded by a cortical shell. The disc consisted of an incompressible nucleus surrounded by nonlinear annulus fibers embedded in a solid ground substance. The purpose was to create a FEA model suitable for clinical purposes as fracture assessment, instrumentation with pedicle screws, and bone remodeling. Testing of the FEA model was performed nonlinear for a number of loading conditions, and the results were compared with experimental data from the literature. The results showed good agreement. The formulation of the FEA model can be justified for the tested loading conditions.

AB - A finite-element analysis (FEA) model of an intact lumbar disc-body unit was generated. The vertebral body of the FEA model consisted of a solid tetrahedral core of trabecular bone surrounded by a cortical shell. The disc consisted of an incompressible nucleus surrounded by nonlinear annulus fibers embedded in a solid ground substance. The purpose was to create a FEA model suitable for clinical purposes as fracture assessment, instrumentation with pedicle screws, and bone remodeling. Testing of the FEA model was performed nonlinear for a number of loading conditions, and the results were compared with experimental data from the literature. The results showed good agreement. The formulation of the FEA model can be justified for the tested loading conditions.

KW - Compressive Strength

KW - Computer Simulation

KW - Elasticity

KW - Finite Element Analysis

KW - Humans

KW - Imaging, Three-Dimensional

KW - Intervertebral Disc

KW - Ligaments

KW - Lumbar Vertebrae

KW - Models, Biological

KW - Motion

KW - Nonlinear Dynamics

KW - Stress, Mechanical

KW - Torque

U2 - 10.1109/TMI.2003.814783

DO - 10.1109/TMI.2003.814783

M3 - Journal article

C2 - 12872949

SN - 0278-0062

VL - 22

SP - 742

EP - 746

JO - I E E E Transactions on Medical Imaging

JF - I E E E Transactions on Medical Imaging

IS - 6

ER -

Nonlinear finite-element analysis and biomechanical evaluation of the lumbar spine

Abstract

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