Elasticity and Viscoelasticity of Human Tibial Cortical Bone Measured by Nanoindentation

de-Macedo-Soares-Silva, Leandro, Ebacher, Vincent, Liu, Danmei, McKay, Heather, Oxland, Thomas R. and Wang, Rizhi (2005). Elasticity and Viscoelasticity of Human Tibial Cortical Bone Measured by Nanoindentation. In: Peter Fratzl, William J. Landis, Rizhi Wang and Fred H. Silver, Materials Ressearch Society Sympposium Proceedings. Structure and Mechanical Behavior of Biological Materials, California, USA, (). 28 March-1 April, 2005.


Author de-Macedo-Soares-Silva, Leandro
Ebacher, Vincent
Liu, Danmei
McKay, Heather
Oxland, Thomas R.
Wang, Rizhi
Title of paper Elasticity and Viscoelasticity of Human Tibial Cortical Bone Measured by Nanoindentation
Conference name Structure and Mechanical Behavior of Biological Materials
Conference location California, USA
Conference dates 28 March-1 April, 2005
Proceedings title Materials Ressearch Society Sympposium Proceedings
Place of Publication Warrendale, PA, U.S.A.
Publisher Materials Research Society
Publication Year 2005
Editor Peter Fratzl
William J. Landis
Rizhi Wang
Fred H. Silver
Volume 874
Total pages 1
Language eng
Abstract/Summary Bone is a composite material composed of collagen, carbonated apatite mineral, water, and other non-collagenous proteins. The bone structure inside human body is under constant remodelling. The mechanical properties of bone and their dynamic changes during remodelling are crucial to the health and quality of life. In this study, the elastic and viscoelastic properties of a 73 year-old female cortical bone were investigated at the lamellar level. This was realized with a nanoindentation technique equipped with dynamic loading function. 325 indentations were made in individual Haversian systems and interstitial bone at both dry and wet condition, and under two different loading frequencies. The results showed no statistically significant differences in elastic modulus between Haversian systems and interstitial bone. There were no systematic changes in modulus at lamellar level from the periosteal to the endosteal site. The lamellar structure of both Haversian system and interstitial bone is viscoelastic with water playing a significant role to the properties. When dry bone is hydrated, elastic modulus decreases and loss tangent increases.
Subjects 1103 Clinical Sciences
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status Unknown

 
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Created: Tue, 21 Apr 2009, 12:10:41 EST by Ms Karen Naughton on behalf of School of Human Movement and Nutrition Sciences