THE FABRIC DEPENDENCE OF THE ORTHOTROPIC ELASTIC-CONSTANTS OF CANCELLOUS BONE
THE FABRIC DEPENDENCE OF THE ORTHOTROPIC ELASTIC-CONSTANTS OF CANCELLOUS BONE
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DOI：
10.1016/0021-9290(90)90048-8
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发表时间：
1990-01-01
影响因子：
2.4
通讯作者：
RICE, JC
中科院分区：
文献类型：
--
作者：
TURNER, CH;COWIN, SC;RICE, JC
有人提出，松质骨的正交各向异性弹性常数取决于一种称为织物的各向异性张量测量以及组织的结构密度。Cowin（1985，Mechanics Mater，4，137-147; 1986，J. Biomech. Engng 108，83-88）发展了弹性常数、结构密度和织物关系的明确关系。在这项研究中，正交各向异性的弹性模量，结构密度，和织物成分进行了测量11松质骨标本从5牛股骨和75个标本从3人近端胫骨，并拟合这些关系，使用最小二乘法分析。这些关系解释了弹性常数变化的72%至94%。弹性常数和结构密度的平方或立方幂函数之间的关系在整个数据分布上比结构密度的线性函数表达式具有更好的预测价值。
It has been proposed that the orthotropic elastic constants of cancellous bone depend upon a tensorial measure of anisotropy called fabric as well as the tissue''s structural density. Cowin (1985, Mechanics Mater, 4, 137-147; 1986, J. Biomech. Engng 108, 83-88) developed explicit relationships for the elastic constant, structural density and fabric relationship. In this study the orthotropic elastic moduli, structural density, and fabric components were measured for 11 cancellous bone specimens from five bovine femora and for 75 specimens from three human proximal tibiae and fitted to these relationships using a least squares analysis. The relationships explained between 72 and 94% of the variance in the elastic constants. The relationships between the elastic constants and squared or cubed power functions of structural density had better predictive value over the entire distribution of the data than did expressions with linear functions of structural density.