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Mechanical Response Of A Lumbar Motion Segment In Axial Torque Alone And Combined With Compression

A. Shirazi-Adl, A. Ahmed, S. Shrivastava
Published 1986 · Medicine

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In the current study, a nonlinear three-dimensional finite element program has been used to analyze the response of a lumbar L2-3 motion segment subjected to axial torque alone and combined with compression. The analysis accounts both for material and geometric nonlinearities and treats the facet articulation as a general moving-contact problem. The disc nucleus has been considered as an incompressible inviscid fluid and the annulus as a composite of collagenous fibers embedded in a matrix of ground substance. The spinal ligaments have been modeled as a collection of nonlinear axial elements. Effects of loss of intradiscal pressure and removal of the facets on the joint response have been analyzed as well. Torsion is primarily resisted by the articular facets that are in contact and the disc annulus. The ligaments play an insignificant role in this respect. For the intact segment, with an increase in torque, the axis of rotation shifts posteriorly in the disc so that under maximum torque it is located posterior to the disc itself. Loss of disc pressure increases this posterior shift whereas removal of the facets decreases it. Torque, by itself, cannot cause the failure of disc fibers, but can enhance the vulnerability of those fibers located at the posterolateral and posterior locations when the torque acts in combination with other types of loading, such as flexion. The most vulnerable element of the segment in torque is the posterior bony structure.



This paper is referenced by
Finite element modeling and damage evaluation of annulus fibrosus
Narjes Momeni Shahraki (2014)
10.1080/001401399185207
A comprehensive analysis of low-back disorder risk and spinal loading during the transferring and repositioning of patients using different techniques.
W. Marras (1999)
10.1016/J.JBIOMECH.2003.11.019
Influence of ligament stiffness on the mechanical behavior of a functional spinal unit.
T. Zander (2004)
10.2310/6640.2003.37832
Low Back Disorders: Evidence-Based Prevention and Rehabilitation
S. McGill (2002)
10.1007/s00586-003-0540-0
Influence of graded facetectomy and laminectomy on spinal biomechanics
T. Zander (2003)
10.1243/PIME_PROC_1991_205_295_02
Axial Rotation of Lumbar Intervertebral Joints in Forward Flexion
M. Pearcy (1991)
10.1177/027836402320556467
Motion Guides for Assisted Manipulation
K. Lynch (2002)
10.1080/02640414.2015.1086014
Lumbar spinal loading during bowling in cricket: a kinetic analysis using a musculoskeletal modelling approach
Yanxin Zhang (2016)
10.1016/j.compbiomed.2018.05.010
Biomechanical investigation on the influence of the regional material degeneration of an intervertebral disc in a lower lumbar spinal unit: A finite element study
Masni-Azian (2018)
10.1016/j.wneu.2019.04.051
Biomechanical Analysis of Different Lumbar Interspinous Process Devices: A Finite Element Study.
Hangkai Shen (2019)
10.1016/j.jbiomech.2008.10.005
Which axial and bending stiffnesses of posterior implants are required to design a flexible lumbar stabilization system?
H. Schmidt (2009)
10.1177/0954411917732596
Impact of spinal rod stiffness on porcine lumbar biomechanics: Finite element model validation and parametric study
Martin Brummund (2017)
10.1016/j.clinbiomech.2015.08.009
Biomechanical effects of fusion levels on the risk of proximal junctional failure and kyphosis in lumbar spinal fusion surgery.
W. Park (2015)
10.1518/hfes.46.1.81.30391
Influence of Fatigue in Neuromuscular Control of Spinal Stability
K. Granata (2004)
10.1201/B15810-63
Engineering support for the spine with spondylolisthesis treatment
Marek Gzik (2013)
10.1097/00007632-200102150-00003
The Pathomechanism of Spondylolytic Spondylolisthesis in Immature Primate Lumbar Spines: In Vitro and Finite Element Assessments
R. Konz (2001)
10.1201/B17439-24
Spine Model for Applications in Aviation Protection
Chengfei Du (2014)
10.1016/j.compbiomed.2017.09.003
Biomechanical analysis of lumbar decompression surgery in relation to degenerative changes in the lumbar spine - Validated finite element analysis
Q. Y. Li (2017)
10.1016/j.jbiomech.2017.10.032
Computational study of the role of fluid content and flow on the lumbar disc response in cyclic compression: Replication of in vitro and in vivo conditions.
Petra Velísková (2018)
Investigation into lumbar spine injury risk factors during fast bowling in junior cricketers
A. Schaefer (2018)
10.1007/s10237-020-01382-9
Muscle-driven and torque-driven centrodes during modeled flexion of individual lumbar spines are disparate.
R. Rockenfeller (2020)
10.1016/J.SPINEE.2015.07.039
Implications of Decompressive Surgical Procedures for Lumbar Spine Stenosis on the Biomechanics of the Adjacent Segment: A Finite Element Analysis
Joseph P. Gjolaj (2015)
10.1016/j.medengphy.2012.04.002
Optimised in vitro applicable loads for the simulation of lateral bending in the lumbar spine.
M. Dreischarf (2012)
10.1227/01.neu.0000430320.39870.f7
Biomechanical Comparison of Transforaminal Lumbar Interbody Fusion With 1 or 2 Cages by Finite-Element Analysis
H. Xu (2013)
10.1016/0141-5425(89)90145-3
Rotational mobility of the human back in forward flexion.
R. J. Hindle (1989)
10.1016/J.JMPT.2005.03.014
Measurement of lumbar spine loads and motions during rotational mobilization.
B. Y. S. Tsung (2005)
Simulating Intervertebral Disc Mechanics Using Finite Element Method
B. Yang (2020)
10.1002/jor.23154
Mechanical assessment of the effects of metastatic lytic defect on the structural response of human thoracolumbar spine
R. Alkalay (2016)
10.1016/j.wneu.2017.12.127
Biomechanical Analysis of Porous Additive Manufactured Cages for Lateral Lumbar Interbody Fusion: A Finite Element Analysis.
Zhenjun Zhang (2018)
10.4271/933131
Application of Finite Element Techniques to the Study of Cervical Spine Mechanics
M. Kleinberger (1993)
10.1007/S007760200117
Biomechanical evaluation of reconstructed lumbosacral spine after total sacrectomy
H. Murakami (2002)
10.1201/B11717-7
Physiological Aspects of Neuromuscular Function
Thomas R. Waters (2012)
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