Equine Articular Cartilage Stiffness Determination Using Indentation
Equine Articular Cartilage Stiffness Determination Using Indentation
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使用压痕测定马关节软骨硬度
DOI：
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
R. Hanson
中科院分区：
文献类型：
--
作者：
Hyeon Lee;Kelcie M. Theis;R. Jackson;R. Hanson
为了确定不同关节类型之间的刚度差异，对新鲜的马关节软骨表面进行了压痕试验，分别取自锁骨、腕关节和窒息关节。结果表明，不同节点的刚度不同，表现出不同的力学行为。将平头圆柱形压头恒速下入20 S，直至压痕深度达到0.2 mm(速度10μm/S)。结果表明，关节软骨较腕关节僵硬，关节僵硬。锁骨、腕关节和窒息关节的平均刚度分别为46.1N/mm、20.5N/mm和2.73N/mm。关节的拟合系数也用学生t检验进行了统计比较。胎儿、腕骨和窒息的某些系数的差异是“非常显著的”(p<；0.001)。并对锁骨和腕关节的4个不同表面进行比较。胎儿的前外侧、前内侧、后外侧和后内侧软骨表面在硬度上没有显著差异。在腕骨中，桡骨远端和近端腕骨关节软骨面的刚度与其他关节面有显著差异，而桡骨远端和腕近端第三腕骨关节软骨面的刚度值相似。放射腕关节的软骨面较腕中关节僵硬。没有观察到马的僵硬与体重以及僵硬与年龄之间的相关性的明显趋势。
In order to determine that the stiffness varies between different joint types, an indentation test was performed on fresh equine articular cartilage surfaces from the fetlock, carpal, and stifle joints. The results demonstrated that the stiffness varies on different joints showing different mechanical behaviors. A flat-ended cylindrical indenter is lowered at a constant rate for 20 s until the indentation depth reaches 0.2 mm (velocity of 10 μm/s). It was shown that the articular cartilage of the fetlock is stiffer than the carpal and stifle joints. The average stiffness of the fetlock, carpal, and stifle joints are 46.1 N/mm, 20.5 N/mm, and 2.73 N/mm, respectively. The coefficients of a fit for the joints were statistically compared as well using the student t-test. The differences of some coefficients between the fetlock, carpus, and stifle were “very highly significant” (p < 0.001). Four different surfaces in the fetlock and four in carpal joint were compared as well. The front lateral, front medial, rear lateral, and rear medial cartilage surfaces in the fetlock were not significantly different in stiffness. In the carpus, the distal radius and proximal radial carpal bone articular cartilage surfaces showed significantly different stiffness from the others, while the distal radial carpal bone and proximal third carpal bone articular cartilage surfaces possessed similar stiffness values. The cartilage surfaces from the radiocarpal joint were stiffer than the midcarpal joint. Clear trends in the correlations between stiffness and weight as well as stiffness and age of the horse were not observed.
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DOI：
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发表时间：
2010
期刊：
American journal of orthopedics (Belle Mead, N.J.)
影响因子：
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发表时间：
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