ANATOMICAL VARIATION OF ORTHOTROPIC ELASTIC-MODULI OF THE PROXIMAL HUMAN TIBIA
ANATOMICAL VARIATION OF ORTHOTROPIC ELASTIC-MODULI OF THE PROXIMAL HUMAN TIBIA
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DOI：
10.1016/0021-9290(89)90073-0
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发表时间：
1989-01-01
影响因子：
2.4
通讯作者：
TURNER, CH
中科院分区：
文献类型：
--
作者：
ASHMAN, RB;RHO, JY;TURNER, CH
使用超声波技术研究了来自三个人类近端胫骨的松质骨的正交各向异性弹性模量的解剖学变化。利用这项技术，可以测量每边小至 8 毫米的松质骨立方体样本的三个正交弹性模量和三个剪切模量。与机械拉伸测试的相关性表明，该技术可以精确测量松质纤维模量（Eten = 0.94Eult + 144.6 MPa，r2 = 0.96，n = 34）。胫骨近端的松质骨非常不均匀，轴向模量在 340 至 3350 MPa 之间。提供了路线图，显示了测量的杨氏模量作为解剖位置的函数。由三个正交模量之间的相对差异确定的松质骨的各向异性在所测试的松质密度的整个范围内表现出相对恒定。发现轴向弹性模量和表观密度之间的关系近似线性，正如其他人对近端胫骨松质骨的报道。
The anatomical variation of orthotropic elastic moduli of the cancellous bone from three human proximal tibiae was investigated using an ultrasonic technique. With this technique, it was possible to measure three orthogonal elastic moduli and three shear moduli from cubic specimens of cancellous bone as small as 8 mm per side. Correlation with mechanical tensile testing has shown this technique to offer a precise measure of cancellous modulus (Eten = 0.94Eult + 144.6 MPa, r2 = 0.96, n = 34). The cancellous bone of the proximal tibia was found to be very inhomogeneous, with the axial modulus ranging between 340 and 3350 MPa. A course map is presented, showing meausured Young''s moduli as a function of anatomical position. The anistropy of the cancellous bone, determined by the relative differences between the three orthogonal moduli, was shown to be relatively constant over the entire range of cancelous densities tested. The relationship between the axial elastic modulus and the apparent density was found to be approximately linear, as reported by others for proximal tibial cancellous bone.