Ducheyne P, Martens M, De Meester P, Aernoudt E, Vrancken M, Van Hulle F, Mulier J C
J Bioeng. 1977 Aug;1(3):197-207.
The fracture aspects of impact twisted human femurs and tibias have been studied in their wet condition. The main tool used to correlate fracture behaviour with bone structure was the scanning electron microscope. Supplementary data were obtained from macroscopic fracture pattern analyses and stress coat experiments on slowly tested dried bone. The interest of the data reported concerns two major points. Firstly the analysis of the fractographic results leads to the conclusion that the fracture has presumably been initiated by shearing parallel with the torsion axis. The fracture propagates along so called spiral and oblique fracture lines. Secondly, the correlation of the macroscopic fracture pattern with microscopic fracture aspects indicates that the fracture is initiated along the cement lines, which can be considered as the weak matrix in an osteon-cement lining composite. The fracture propagates along the cement lines as well as through osteons and lamellae. Throughout the impact fracture surfaces ductile and brittle fracture aspects were observed, although the brittle fracture mode was predominant during propagation.
对处于湿润状态的受冲击扭转人体股骨和胫骨的骨折情况进行了研究。用于将骨折行为与骨骼结构相关联的主要工具是扫描电子显微镜。补充数据来自宏观骨折模式分析以及对缓慢测试的干燥骨骼进行的应力涂层实验。所报告数据的关注点有两个主要方面。首先，对断口分析结果的分析得出结论，骨折可能是由与扭转轴平行的剪切力引发的。骨折沿着所谓的螺旋形和斜形骨折线扩展。其次，宏观骨折模式与微观骨折情况的相关性表明，骨折沿黏合线起始，黏合线可被视为骨单位 - 黏合衬里复合材料中的薄弱基质。骨折沿着黏合线以及穿过骨单位和骨板扩展。在整个冲击骨折表面观察到了韧性和脆性骨折情况，尽管在扩展过程中脆性骨折模式占主导。
