Dynamic mechanical properties of cortical bone: The effect of mineral content
Dynamic mechanical properties of cortical bone: The effect of mineral content
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皮质骨的动态力学特性：矿物质含量的影响
DOI：
10.1016/j.matlet.2004.08.048
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发表时间：
2005
影响因子：
3
通讯作者：
Zu
中科院分区：
文献类型：
--
作者：
T. Wang;Zu
本研究的目的是探讨矿物含量对皮质骨动态力学性能和变性温度的影响。用0.2mol/L EDTA缓冲液处理牛股骨皮质骨标本，以降低骨矿物质含量（BMC）。采用动态力学热分析仪（DMTA）、傅立叶变换红外光谱仪（FTIR）和差示扫描量热仪（DSC）分别对骨的粘弹性、微观结构和变性温度进行表征。FTIR分析表明，EDTA处理对胶原纤维的微观结构的影响可以忽略不计。DMTA分析表明，随着BMC的降低，骨样品的储能模量（E′）和损耗模量（E″）降低，而损耗因子（tanδ）增加。此外，随着BMC的降低，tanδ峰变宽并分裂成两个峰。在DSC测试中观察到转变温度随着BMC的降低而降低。
The purpose of this study was to explore the effect of mineral content on the dynamic mechanical properties and denaturation temperature of cortical bone. Cortical bone specimens from bovine femora were treated with 0.2 mol/l buffered solution of EDTA to reduce bone mineral content (BMC). The viscoelasticity, microstructure and denaturation temperature of bone was characterized by dynamic mechanical thermal analyzer (DMTA), FTIR spectroscopy and differential scanning calorimeter (DSC), respectively. FTIR analysis revealed that EDTA treatment had a negligible effect on the microstructure of the collagen fibers. DMTA analysis indicated that the storage modulus (E′) and loss modulus (E″) of bone specimens decreased upon decreasing BMC, whereas loss factor (tanδ) increased upon decreasing BMC. In addition, tanδ peak broadened and splitted into two peaks upon decreasing BMC. A lessening of transformation temperature with decreasing BMC was observed in DSC testing.
通过无损振荡测试测量的表观粘弹性各向异性可以反映皮质骨中是否存在缺陷。
DOI：
10.1002/jbm.a.20128
发表时间：
2004
期刊：
Journal of biomedical materials research. Part A.
影响因子：
--
作者：
Yeni,YenerN;Christopherson,GregoryT;Turner,ASimon;Les,CliffordM;Fyhrie,DavidP
通讯作者：
Fyhrie,DavidP