Summary
Experimental callotasis was induced in rabbit femurs and mechanical tests were performed for the callus in callotasis in order to investigate its mechanical behaviors when tensile loads were applied.
Whole-length femurs were removed after sacrificing eight rabbits in the course of callotasis. Femurs were osteotomized at the level of the midshaft with a bone saw and fixed with a mini-model external fixator. Callotasis was started at the rate of about 0.35 mm twice a day one week after the osteotomy. Twelve osteotomized femurs with applied external fixation were left without callotasis and served as controls.
The callus showed the characteristics of hysteresis in the load-unload curves and also of stress relaxation in stress relaxation tests. Therefore, the elongated callus in callotasis had viscoelasticity characteristics, which were very similar to those of callus in the control group one week after the osteotomy. The immature zone of elongated callus is thought to be responsible for viscoelasticity.
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© 1992 Springer-Verlag Tokyo
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Miyasaka, Y., Sakurai, M., Yokobori, T.A., Sasaki, S. (1992). Visco-Elastic Behavior of Callus in Rabbit Femurs. In: Niwa, S., Perren, S.M., Hattori, T. (eds) Biomechanics in Orthopedics. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68216-5_9
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DOI: https://doi.org/10.1007/978-4-431-68216-5_9
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-68218-9
Online ISBN: 978-4-431-68216-5
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