Feasibility of compressive follower load on spine in a simplified dynamic state: a simulation study

Byeong Sam Kim; Tae-Hong Lim; Tae Kyu Kwon; Kap-Soo Han

doi:10.3233/BME-141045

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Feasibility of compressive follower load on spine in a simplified dynamic state: a simulation study

Journal article

Open access

Peer reviewed

Feasibility of compressive follower load on spine in a simplified dynamic state: a simulation study

Byeong Sam Kim, Tae-Hong Lim, Tae Kyu Kwon and Kap-Soo Han

Bio-medical materials and engineering, Vol.24(6), pp.2319-2329

2014

DOI: 10.3233/BME-141045

PMID: 25226932

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Abstract

This study investigated that the spinal MFs can create compressive follower loads (CFLs) in the lumbar spine in a dynamic state. Three-dimensional optimization and finite element (FE) models of the spinal system were developed and validated using reported experimental data. An optimization analysis was performed to determine the MFs that create CFLs in the lumbar spine in various sagittal postures from 10° extension to 40° flexion. Optimization solutions for the MFs, CFLs, and follower load path (FLP) location were feasible for all studied postures. The FE predictions demonstrated that MFs which created CFLs along the base spinal curve connecting the geometrical centers or along a curve in its vicinity (within anterior or posterior shift by 2 mm) produced stable deformation of the lumbar spine in the neutral standing and flexed postures, whereas the MFs which created the smallest CFLs resulted in unstable deformation. For extended postures, however, finding CFLs creating MFs that produce stable deformation of the extended spine was not possible. The results of this study support the hypothesis that the spinal muscles may stabilize the spine via the CFL mechanism.

Compressive Strength - physiology

Tensile Strength - physiology

Humans

Stress, Mechanical

Muscle, Skeletal - physiology

Zygapophyseal Joint - physiology

Feasibility Studies

Weight-Bearing - physiology

Posture - physiology

Models, Biological

Computer Simulation

Muscle Contraction - physiology

Range of Motion, Articular - physiology

Elastic Modulus - physiology

Lumbar Vertebrae - physiology

Details

Title: Subtitle: Feasibility of compressive follower load on spine in a simplified dynamic state: a simulation study
Creators: Byeong Sam Kim - Humanetics Innovative Solutions Inc., Plymouth, Michigan, USA Department of Biomedical Engineering, The University of Iowa, Iowa City, Iowa, USA
Tae-Hong Lim - Department of Biomedical Engineering, The University of Iowa, Iowa City, Iowa, USA
Tae Kyu Kwon - Division of Biomedical Engineering, Chonbuk National University, Jeonju, Republic of Korea
Kap-Soo Han - Division of Biomedical Engineering, Chonbuk National University, Jeonju, Republic of Korea Medical School, Chonbuk National University, Jeonju, Republic of Korea
Resource Type: Journal article
Publication Details: Bio-medical materials and engineering, Vol.24(6), pp.2319-2329
Publisher: Netherlands
DOI: 10.3233/BME-141045
PMID: 25226932
ISSN: 0959-2989
eISSN: 1878-3619
Language: English
Date published: 2014
Academic Unit: Roy J. Carver Department of Biomedical Engineering
Record Identifier: 9984064239702771

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