Predoi-Racila M, Crolet J M
Department of Applied Mathematics, University of Craiova, Romania.
Comput Methods Biomech Biomed Engin. 2011 Jul;14(7):621-31. doi: 10.1080/10255842.2010.493509.
Literature devoted to experimental measurements of the elastic properties of the human cortical bone gives us a relatively wide spectrum of values. This proves that the result depends on the bone itself and on the area from where the sample has been taken. Ultrasonic measurement, which is a fine technology, points out complex maps. The reason of this very strong heterogeneity is not completely explained. The present study is based on a numerical model of the human cortical bone, the SiNuPrOs model and aims to suggest an explanation. If one admits that mineral apposition occurs around collagen fibres, the spatial orientation of these fibres would have an important consequence on the elastic properties of the medium. On the basis of homogenisation theory allowing to compute all the components of the elasticity tensor, this study quantifies the main influence of this architectural orientation and its effect on the anisotropy of the cortical bone.
致力于人体皮质骨弹性特性实验测量的文献给出了一系列相对宽泛的值。这证明结果取决于骨本身以及取样的区域。超声测量是一项精细技术，它显示出复杂的图谱。这种极强的非均质性的原因尚未完全得到解释。本研究基于人体皮质骨的数值模型——SiNuPrOs模型，旨在给出一种解释。如果承认矿物质在胶原纤维周围沉积，那么这些纤维的空间取向将对介质的弹性特性产生重要影响。基于允许计算弹性张量所有分量的均匀化理论，本研究量化了这种结构取向的主要影响及其对皮质骨各向异性的作用。
