, Volume 60, Issue 6, pp 39–44

Aging and loading rate effects on the mechanical behavior of equine bone


  • Robb M. Kulin
    • Materials Science & Engineering ProgramUniversity of California at San Diego
  • Fengchun Jiang
    • NanoEngineering DepartmentUniversity of California at San Diego
    • NanoEngineering DepartmentUniversity of California at San Diego
Research Summary Biological Materials Science

DOI: 10.1007/s11837-008-0069-0

Cite this article as:
Kulin, R.M., Jiang, F. & Vecchio, K.S. JOM (2008) 60: 39. doi:10.1007/s11837-008-0069-0


Whether due to a sporting accident, high-speed impact, fall, or other catastrophic event, the majority of clinical bone fractures occur under dynamic loading conditions. However, although extensive research has been performed on the quasi-static fracture and mechanical behavior of bone to date, few high-quality studies on the fracture behavior of bone at high strain rates have been performed. Therefore, many questions remain regarding the material behavior, including not only the loading-rate-dependent response of bone, but also how this response varies with age. In this study, tests were performed on equine femoral bone taken post-mortem from donors 6 months to 28 years of age. Quasi-static and dynamic tests were performed to determine the fracture toughness and compressive mechanical behavior as a function of age at varying loading rates. Fracture paths were then analyzed using scanning confocal and scanning-electron microscopy techniques to assess the role of various microstructural features on toughening mechanisms.

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© TMS 2008