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Advances in Biomechanics & Applications Volume 1, Number 2, June 2014 , pages 77-83 DOI: https://doi.org/10.12989/aba.2014.1.2.077 |
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Atypical viscous fracture of human femurs |
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Zohar Yosibash, Romina Plitman Mayo and Charles Milgrom
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| Abstract | ||
| Creep phenomenon at the scale of bone tissue (small specimens) is known to be present and demonstrated for low strains. Here creep is demonstrated on a pair of fresh-frozen human femurs at the organ level at high strains. Under a constant displacement applied on femur\'s head, surface strains at the upper neck location increase with time until fracture, that occurs within 7-13 seconds. The monotonic increase in strains provides evidence on damage accumulation in the interior (probably damage to the trabeculae) prior to final fracture, a fact that hints on probable damage of the trabecular bone that occurs prior to the catastrophic fracture of the cortical surface layer. | ||
| Key Words | ||
| femur; fracture; creep | ||
| Address | ||
| Zohar Yosibash and Romina Plitman Mayo: Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel Charles Milgrom: Hadassah Hospital and Hebrew University of Jerusalem, Ein-Kerem, Jerusalem, Israel | ||
