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Effect of intercostal muscle and costovertebral joint material properties on human ribcage stiffness and kinematics

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  • Matthew Kindig
  • Zuoping Li
  • Richard Kent
  • Damien Subit

Abstract

Current finite element (FE) models of the human thorax are limited by the lack of local-level validation, especially in the ribcage. This study exercised an existing FE ribcage model for a 50th percentile male under quasi-static point loading and dynamic sternal loading. Both force-displacement and kinematic responses of the ribcage were compared against experimental data. The sensitivity of the model response to changes in the material properties of the costovertebral (CV) joints and intercostal muscles was assessed. The simulations found that adjustments to the CV joints tended to change the amount of rib rotation in the sagittal plane, while changes to the elastic modulus and thickness of the intercostal muscles tended to alter both the stiffness and the direction and magnitude of rib motions. This study can lend insight into the role that the material properties of these two thoracic structures play in the dynamics of the ribcage during a frontal loading condition.

Suggested Citation

  • Matthew Kindig & Zuoping Li & Richard Kent & Damien Subit, 2015. "Effect of intercostal muscle and costovertebral joint material properties on human ribcage stiffness and kinematics," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 18(5), pages 556-570, April.
    • Handle: RePEc:taf:gcmbxx:v:18:y:2015:i:5:p:556-570
    DOI: 10.1080/10255842.2013.820718
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