A novel scratching approach for measuring age-related changes in the in situ toughness of bone.
A novel scratching approach for measuring age-related changes in the in situ toughness of bone.
复制标题
一种新颖的刮擦方法,用于测量与年龄相关的骨原位韧性变化。
DOI:
10.1016/j.jbiomech.2006.06.005
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发表时间:
2007
影响因子:
2.4
通讯作者:
Ji,H
中科院分区:
文献类型:
--
作者:
Wang,X;Yoon,YJ;Ji,H
A scratch test using a nanoindentation system was proposed in this study to assess the age-related changes in the in situ toughness of bone matrix at ultrastructural levels. A tissue removal energy density (ur) was defined and estimated as the work done by the scratch (UT) divided by the total volume of the scratch groove (us). The value of uswas used as a relative measure of the in situ toughness of the tissue. Human cortical bone specimens obtained from middle-aged (between 49 and 59 years old) and elderly groups (over 69 years old) were tested using this technique. A significant difference in the estimated removal energy density (us) in the secondary osteons was found between the middle-aged and elderly groups (5.49±0.696 vs. 4.09±1.30N/mm2, respectively).
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影响因子:
2.4
作者:
CHOI, K;GOLDSTEIN, SA
通讯作者:
GOLDSTEIN, SA
影响因子:
4.2
作者:
A. Boskey
通讯作者:
A. Boskey
影响因子:
4.1
作者:
Rho, JY;Zioupos, P;Pharr, GM
通讯作者:
Pharr, GM
影响因子:
3.5
作者:
C. Nyssen;P. Duchesne;A. Dhem
通讯作者:
A. Dhem
影响因子:
2.4
作者:
CALER, WE;CARTER, DR
通讯作者:
CARTER, DR