ENERGY ABSORPTIVE PROPERTIES OF HUMAN TRABECULAR BONE SPECIMENS DURING AXIAL-COMPRESSION
ENERGY ABSORPTIVE PROPERTIES OF HUMAN TRABECULAR BONE SPECIMENS DURING AXIAL-COMPRESSION
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DOI：
10.1002/jor.1100070316
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发表时间：
1989-05-01
影响因子：
2.8
通讯作者：
PONGSOIPETCH, B
中科院分区：
文献类型：
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作者：
LINDE, F;HVID, I;PONGSOIPETCH, B
对9具大体正常的膝关节标本(n=121)进行了固定应变(0.6%)的非破坏性测试，以分析卸载能和滞后能，然后进行破坏性测试以分析工作到失效的情况。所有能量特性都表现出个体间的差异(p<；0.005)。在0.6%应变下，卸载能与应力(r=0.95)和刚度(r=0.89)呈显著正相关。在0.6%应变下，滞后能与应力(r=0.82)和刚度(r=0.76)之间的相关性不是很强，但有统计学意义。在0.6%应变下，损耗角正切与刚度呈负相关(r=-0.4，p<；0.001)。工作到失效与弹性模数(r=0.75)、极限应力(r=0.92)、极限应变(r=0.51)呈正相关。所有能量性质之间存在正相关(p<；0.001)。
Human trabecular bone specimens (n = 121) from the proximal tibial epiphysis of nine macrocopically normal cadaver knees were tested nondestructively to a fixed strain (0.6%) for analysis of unloading energy and hysteresis energy followed by a destructive test for analysis of work to failure. All energy properties showed interindividual variation (p < 0.005). There was a strong positive correlation between unloading energy and both stress (r = 0.95) and stiffness (r = 0.89) determined at 0.6% strain. A less strong, but statistically significant, correlation was found between hysteresis energy and stress (r = 0.82) and stiffness (r = 0.76) at 0.6% strain. There was a negative correlation between the loss tangent and stiffness at 0.6% strain (r = -0.40, p < 0.001). Work to failure correlated positively with modulus of elasticity (r = 0.75), ultimate stress (r = 0.92), and ultimate strain (r = 0.51). There was a positive mutual correlation between all energy properties (p < 0.001).