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Image-based midsole insert design and the material effects on heel plantar pressure distribution during simulated walking loads

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  • Y. Gu
  • J. Li
  • M. Lake
  • Y. Zeng
  • X. Ren
  • Z. Li

Abstract

The primary objective of this paper is to study the use of medical image-based finite element (FE) modelling in subject-specific midsole design and optimisation for heel pressure reduction using a midsole plug under the calcaneus area (UCA). Plugs with different relative dimensions to the size of the calcaneus of the subject have been incorporated in the heel region of the midsole. The FE foot model was validated by comparing the numerically predicted plantar pressure with biomechanical tests conducted on the same subject. For each UCA midsole plug design, the effect of material properties and plug thicknesses on the plantar pressure distribution and peak pressure level during the heel strike phase of normal walking was systematically studied. The results showed that the UCA midsole insert could effectively modify the pressure distribution, and its effect is directly associated with the ratio of the plug dimension to the size of the calcaneus bone of the subject. A medium hardness plug with a size of 95% of the calcaneus has achieved the best performance for relieving the peak pressure in comparison with the pressure level for a solid midsole without a plug, whereas a smaller plug with a size of 65% of the calcaneus insert with a very soft material showed minimum beneficial effect for the pressure relief.

Suggested Citation

  • Y. Gu & J. Li & M. Lake & Y. Zeng & X. Ren & Z. Li, 2011. "Image-based midsole insert design and the material effects on heel plantar pressure distribution during simulated walking loads," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 14(08), pages 747-753.
    • Handle: RePEc:taf:gcmbxx:v:14:y:2011:i:08:p:747-753
    DOI: 10.1080/10255842.2010.493886
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    Cited by:

    1. Fengfeng Li & Ntwali Adrien & Yuhuan He, 2022. "Biomechanical Risks Associated with Foot and Ankle Injuries in Ballet Dancers: A Systematic Review," IJERPH, MDPI, vol. 19(8), pages 1-10, April.
    2. Scott Telfer & Ahmet Erdemir & James Woodburn & Peter R Cavanagh, 2014. "What Has Finite Element Analysis Taught Us about Diabetic Foot Disease and Its Management? A Systematic Review," PLOS ONE, Public Library of Science, vol. 9(10), pages 1-13, October.

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