Numerical analysis on quantitative role of trunk muscles in spinal stabilization

Yoon Hyuk Kim; Kyungsoo Kim

doi:10.1299/jsmec.47.1062

Numerical analysis on quantitative role of trunk muscles in spinal stabilization

Yoon Hyuk Kim, Kyungsoo Kim

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The human lumbar spine can support much larger compressive loads if it is applied along a follower load path that approximates the tangent to the curve of the lumbar spine compared with the vertical load path. In this study, a musculoskeletal finite element model of the simplified lumbar spine including idealized psoas major muscles in the frontal plane was developed and the quantitative role of psoas major muscles was investigated to generate the follower load by using stiffness methods when vertical loads are given. The muscle force distributions were analyzed under various loading cases and follower load constraints. The validity of the developed model was assessed through comparison with previous modeling and experimental studies.

Original language	English
Pages (from-to)	1062-1069
Number of pages	8
Journal	JSME International Journal, Series C: Mechanical Systems, Machine Elements and Manufacturing
Volume	47
Issue number	4
DOIs	https://doi.org/10.1299/jsmec.47.1062
Publication status	Published - Dec 2004

Keywords

Finite element model
Follower load
Lumbar spine
Muscle forces
Stiffness analysis

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10.1299/jsmec.47.1062

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AB - The human lumbar spine can support much larger compressive loads if it is applied along a follower load path that approximates the tangent to the curve of the lumbar spine compared with the vertical load path. In this study, a musculoskeletal finite element model of the simplified lumbar spine including idealized psoas major muscles in the frontal plane was developed and the quantitative role of psoas major muscles was investigated to generate the follower load by using stiffness methods when vertical loads are given. The muscle force distributions were analyzed under various loading cases and follower load constraints. The validity of the developed model was assessed through comparison with previous modeling and experimental studies.

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KW - Stiffness analysis

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Numerical analysis on quantitative role of trunk muscles in spinal stabilization

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