A COMPARISON OF THE FATIGUE BEHAVIOR OF HUMAN TRABECULAR AND CORTICAL BONE TISSUE
A COMPARISON OF THE FATIGUE BEHAVIOR OF HUMAN TRABECULAR AND CORTICAL BONE TISSUE
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DOI：
10.1016/0021-9290(92)90051-2
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发表时间：
1992-12-01
影响因子：
2.4
通讯作者：
GOLDSTEIN, SA
中科院分区：
文献类型：
--
作者：
CHOI, K;GOLDSTEIN, SA
利用四点弯曲循环试验，在微结构水平上实验确定了人胫骨骨小梁骨组织（单个小梁）和类似大小的皮质骨标本的疲劳特性，并根据模量、矿物密度和微结构特征对它们进行了比较。结果表明，小梁试件的模量和疲劳强度明显低于皮质试件，尽管其矿物密度值较高。骨折表面和微损伤分析表明，骨小梁和骨皮质组织的骨折和损伤模式不同，这取决于它们的显微结构特征。基于力学试验和定性观察的结果。骨水泥线可能在骨小梁组织微骨折中起力学作用。
The fatigue properties of trabecular bone tissue (single trabeculae) and similarly sized cortical bone specimens from human tibia were experimentally determined on a microstructural level using four-point bending cyclic tests, and they were compared based on modulus, mineral density, and microstructural characteristics. The results showed that trabecular specimens had significantly lower moduli and lower fatigue strength than cortical specimens, despite their higher mineral density values. Fracture surface and microdamage analyses illustrated different fracture and damage patterns between trabecular and cortical bone tissue, depending upon their microstructural characteristics. Based on the results from mechanical tests and qualitative observations. a possible mechanical role of the cement lines in trabecular tissue microfracture was suggested.