Stabilization of the lumbar spine by spinal muscle forces producing compressive follower loads: 3-dimensional computational study

Tianjiao Foresto; InO Song; Byeong Sam Kim; Tae-Hong Lim

doi:10.1002/jor.24059

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Stabilization of the lumbar spine by spinal muscle forces producing compressive follower loads: 3-dimensional computational study

Journal article

Open access

Peer reviewed

Stabilization of the lumbar spine by spinal muscle forces producing compressive follower loads: 3-dimensional computational study

Tianjiao Foresto, InO Song, Byeong Sam Kim and Tae-Hong Lim

Journal of orthopaedic research, Vol.36(11), pp.3004-3012

11/2018

DOI: 10.1002/jor.24059

PMID: 29802732

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Abstract

Axial compressive loads whose direction changes along the spinal curvature (so called compressive follower loads (CFLs)) was postulated as a normal physiological load in the lumbar spine in the literature. Computational analyses were conducted in this study using finite element and optimization models of the spinal system incorporating 244 fascicles of back muscles. It was feasible to find optimum solutions for spinal muscle forces generating CFLs in the lumbar spine in 3-D postures of neutral standing, flexion 40°, extension 10°, axial rotation 10°, or lateral bending 30°. FE analyses demonstrated that the lumbar spine can be in a stable condition not under all CFL generating muscle forces but under those producing CFLs along a curve parallel to the spinal curvature located in the vicinity of the base spinal curve constructed by connecting the geometrical centers of the vertebral bodies. It was also possible to estimate the stable range of the relative location of such CFL curve to the base spinal curve. These results suggest that the lumbar spine in various 3-D postures can be stabilized by spinal muscles that generate CFLs in the spine, which at least in part supports the hypothesis of CFLs as a physiological load in the lumbar spine. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:3004-3012, 2018.

Back Muscles - physiology

Models, Biological

Humans

Finite Element Analysis

Weight-Bearing

Imaging, Three-Dimensional

Lumbar Vertebrae - physiology

Details

Title: Subtitle: Stabilization of the lumbar spine by spinal muscle forces producing compressive follower loads: 3-dimensional computational study
Creators: Tianjiao Foresto - Department of Biomedical Engineering, University of Iowa, Iowa City, Iowa
InO Song - Department of Biomedical Engineering, University of Iowa, Iowa City, Iowa
Byeong Sam Kim - Warren Technical Center, General Motors, Warren, Michigan
Tae-Hong Lim - Department of Biomedical Engineering, University of Iowa, Iowa City, Iowa
Resource Type: Journal article
Publication Details: Journal of orthopaedic research, Vol.36(11), pp.3004-3012
DOI: 10.1002/jor.24059
PMID: 29802732
NLM abbreviation: J Orthop Res
ISSN: 0736-0266
eISSN: 1554-527X
Publisher: United States
Language: English
Date published: 11/2018
Academic Unit: Roy J. Carver Department of Biomedical Engineering
Record Identifier: 9984064224502771

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