TRABECULAR BONE MODULUS AND STRENGTH CAN DEPEND ON SPECIMEN GEOMETRY
TRABECULAR BONE MODULUS AND STRENGTH CAN DEPEND ON SPECIMEN GEOMETRY
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DOI：
10.1016/0021-9290(93)90059-n
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发表时间：
1993-08-01
影响因子：
2.4
通讯作者：
HAYES, WC
中科院分区：
文献类型：
--
作者：
KEAVENY, TM;BORCHERS, RE;HAYES, WC
我们对湿牛小梁骨进行了一系列单轴压缩试验，以比较2:1长宽比（10毫米长，5毫米直径）圆柱体（n=30）和5mm立方体（n=29）测量时的模量和强度。我们还比较了模量-密度和强度-密度回归的相关系数以及估计的标准误差。当比较各组的模量和强度平均值时，表观密度的混杂变化用协方差分析来解释。采用Fisher’s Z变换对相关系数进行统计比较。协方差分析的结果表明，立方体的模量和强度提高了36% (p
We performed a series of uniaxial compression tests on wet bovine trabecular bone to compare both modulus and strength when measured using 2 : 1 aspect ratio (10 mm long, 5 mm diameter) cylinders (n=30) and 5mm cubes (n=29). We also compared the correlation coefficients in the resulting modulus-density and strength-density regressions and the standard errors of the estimate. When comparing the mean values of modulus and strength for each group, the confounding variations in apparent density were accounted for with an analysis of covariance. The Fisher's Z transformation was used to compare the correlation coefficients statistically. Results from the analysis of covariance indicated that the modulus and strength of the cubes were higher by 36% (p