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The effect of calcification on the structural mechanics of the costal cartilage

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  • Jason L. Forman
  • Richard W. Kent

Abstract

The costal cartilage often undergoes progressive calcification with age. This study sought to investigate the effects of calcification on the structural mechanics of whole costal cartilage segments. Models were developed for five costal cartilage specimens, including representations of the cartilage, the perichondrium, calcification, and segments of the rib and sternum. The material properties of the cartilage were determined through indentation testing; the properties of the perichondrium were determined through optimisation against structural experiments. The calcified regions were then expanded or shrunk to develop five different sensitivity analysis models for each. Increasing the relative volume of calcification from 0% to 24% of the cartilage volume increased the stiffness of the costal cartilage segments by a factor of 2.3–3.8. These results suggest that calcification may have a substantial effect on the stiffness of the costal cartilage which should be considered when modelling the chest, especially if age is a factor.

Suggested Citation

  • Jason L. Forman & Richard W. Kent, 2014. "The effect of calcification on the structural mechanics of the costal cartilage," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 17(2), pages 94-107, January.
    • Handle: RePEc:taf:gcmbxx:v:17:y:2014:i:2:p:94-107
    DOI: 10.1080/10255842.2012.671307
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