Abstract
The human cortical bone is a composite material composed, at the molecular scale, of an organic phase (collagen I fibrils) and an inorganic phase (mainly small crystallites of hydroxyapatite). In human bones, the admixture of these two phases results in a densely packed concentric lamellar structure (osteon) that is embedded into an interstitial matrix. Besides, bone is a living tissue that can adapt its structure and geometry to its mechanical environment through a multi cellular phenomenon, known as bone remodelling. Cellular mechanical environment is certainly one of the key parameters that trigger and regulate this process. The latter results in a very heterogenous material with a high variability in osteon mineral density, which is related to the level of maturation of the newly formed tissue. The purpose of this paper is to measure the Young’s modulus and strain of various osteons taken from the different aging specimens.
Published Version
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