Effect of Bone Mineral Content on the Tensile Properties of Cortical Bone: Experiments and Theory

[+] Author and Article Information
S. P. Kotha

University of Medicine and Dentistry of New Jersey, SOM, Department of Osteosciences/Biomechanics, PCC Suite 102, Stratford, NJ 08084-1504

N. Guzelsu

UMDNJ-SOM, Department of Osteosciences/Biomechanics, PCC Suite 102, Stratford, NJ 08084-1504 Phone: (856) 566-2731 Fax: (856) 566-2733 e-mail: guzelsu@umdnj.edu

J Biomech Eng 125(6), 785-793 (Jan 09, 2004) (9 pages) doi:10.1115/1.1631586 History: Online January 09, 2004
Copyright © 2003 by ASME
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Grahic Jump Location
The unit cell with extrafibrillar or intrafibrillar mineral platelets and precipitated material (platelets) used to model the reinforcement of the organic matrix, primarily type I collagen.
Grahic Jump Location
Experimental and theoretical stress-strain curves for control (12-day immersed in saline) and 3-day and 12-day fluoride-treated specimens. The theoretical curves assumed that the shear modulus and shear yield stress decreases with increased dissolution. See text for details.
Grahic Jump Location
Mohr’s circle for the organic matrix with different mineral contents. It is constructed by using the ultimate normal stress of the organic matrix of bone from the decalcified sample experiments [22.3 MPa; 0.0 MPa]. The second point of the Mohr’s circle is obtained by matching the experimental value of the yield stress determined by the 0.002 offset method of the control sample to the theoretically predicted one [12.1 MPa; 19.3 MPa]. Here it is assumed that organic matrix of the bone tissue behaves perfectly elastic until ultimate stress is reached.




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