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Periosteal biaxial residual strains correlate with bone specific growth rates in chick embryos

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  • J.C. Chen
  • B. Zhao
  • M.T. Longaker
  • J.A. Helms
  • D.R. Carter

Abstract

It has been proposed that periosteal residual tensile strains influence periosteal bone apposition and endochondral ossification. The role of bone growth rates on the development of residual strains is not well known. This study examined the relationships between specific growth rate and residual strains in chick tibiotarsi. We measured length and circumference during embryonic days 11–20 using microCT. Bones grew faster in length, with longitudinal and circumferential specific growth rates decreasing from 17 to 9% and 14 to 8% per day, respectively. To calculate residual strains, opening dimensions of incisions through the periosteum were analysed using finite element techniques. Results indicate that Poisson's ratio for an isotropic material model is between 0 and 0.04. For the model with Poisson's ratio 0.03, longitudinal and circumferential residual strains decreased from 46.2 to 29.3% and 10.6 to 3.9%, respectively, during embryonic days 14–20. Specific growth rates and residual strains were positively correlated (p < 0.05).

Suggested Citation

  • J.C. Chen & B. Zhao & M.T. Longaker & J.A. Helms & D.R. Carter, 2008. "Periosteal biaxial residual strains correlate with bone specific growth rates in chick embryos," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 11(5), pages 453-461.
    • Handle: RePEc:taf:gcmbxx:v:11:y:2008:i:5:p:453-461
    DOI: 10.1080/10255840802129817
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