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首页> 外文期刊>Journal of Biomechanics >Mechanical properties of porcine femoral cortical bone measured by nanoindentation
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Mechanical properties of porcine femoral cortical bone measured by nanoindentation

机译：纳米压痕法测定猪股骨骨的力学性能

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摘要

This study uses a nanoindentation technique to examine variations in the local mechanical properties of porcine femoral cortical bone under hydrated conditions. Bone specimens from three age groups (6, 12 and 42 months), representing developing bone, ranging from young to mature animals, were tested on the longitudinal and transverse cross-sectional surfaces. Elastic modulus and hardness of individual lamellae within bone's microstructure: laminar bone, interstitial bone, and osteons, were measured. Both the elastic modulus and hardness increased with age. However, the magnitudes of these increases were different for each microstructural component. The longitudinal moduli were higher than the transverse moduli. Dehydrated samples were also tested to allow a comparison with hydrated samples and these resulted in higher moduli and hardness than the hydrated samples. Again, the degree of variation was different for each microstructural component. These results indicate that the developmental changes in bone have different rates of mechanical change within each microstructural component.
机译：这项研究使用纳米压痕技术来检查在水合条件下猪股骨皮质骨的局部力学性能的变化。在纵向和横向横截面上测试了三个年龄段（6、12和42个月）的代表正在发育的骨骼的骨标本，范围从幼小到成熟的动物。在骨骼的微结构中测量了各个薄片的弹性模量和硬度：薄片状骨，间质骨和骨质。弹性模量和硬度均随年龄增加。但是，对于每个微结构组件，这些增加的幅度是不同的。纵向模量高于横向模量。还对脱水样品进行了测试，以便与水合样品进行比较，与水合样品相比，这些样品的模量和硬度更高。同样，每个微结构组件的变化程度也不同。这些结果表明，骨骼的发育变化在每个微结构组件内具有不同的机械变化速率。

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