On the fracture toughness of equine metacarpi

Alto, A.<sup>1</sup>; Pope, M. H.<sup>2</sup>

Affiliations

¹Istituto di Tecnologie, Facolta di Ingegneria, Universita di Bari, 70126, Bari, Italy

²Departments of Orthopaedic Surgery and Mechanical Engineering, University of Vermont, Burlington, VT 05401. U.S.A.

Abstract

This paper reports on the measurement of both tensile and fracture behavior of paired equine metacarpi. Tests were performed at strain rates of 10⁻⁴ sec⁻¹. Three-point bending tests were carried out on notched specimens to attain the toughness values and the same specimens were used to obtain the elastic moduli. The average fracture toughness was found to be constant from the proximal to the distal end. Both the anterolateral and anteromedical segments have fracture toughness that increases from the proximal to the distal zone. This trend is reversed in the posterior specimens. The fracture toughness was found to increase as a function of the number of discontinuities.

Links

DOI: 10.1016/0021-9290(79)90026-5

PubMed: 457695

WoS: A1979GY91300003

History

Received: 1977-12-16

Revised: 1978-06-23

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Cited By (15)

Year	Entry
1996	Egerer AK, Saha S, McMillan PJ, Rivera J. Morphology of the cement line in human bone and its relationship to bone strength. In: Proceedings of the 15th Southern Biomedical Engineering Conference. March 29-31, 1996; Dayton, OH.7-10.
1998	Martin RB, Burr DB, Sharkey NA. Skeletal Tissue Mechanics. New York, NY: Springer-Verlag; 1998.
2004	Wang X, Puram S. The toughness of cortical bone and its relationship with age. Ann Biomed Eng. January 2004;32(1):123-135.
2004	Doblaré M, García JM, Gomez MJ. Modelling bone tissue fracture and healing: a review. Eng Fract Mech. September 2004;71(13-14):1809-1840.
1982	Martin RB, Burr DB. A hypothetical mechanism for the stimulation of osteonal remodelling by fatigue damage. J Biomech. 1982;15(3):137-139.
1995	Norman TL, Vashishth D, Burr DB. Fracture toughness of human bone under tension. J Biomech. March 1995;28(3):309-320.
1996	Norman TL, Nivargikar SV, Burr DB. Resistance to crack growth in human cortical bone is greater in shear than in tension. J Biomech. August 1996;29(8):1023-1031.
1997	Les CM, Stover SM, Keyak JH, Taylor KT, Willits NH. The distribution of material properties in the equine third metacarpal bone serves to enhance sagittal bending. J Biomech. April 1997;30(4):355-361.
2006	Bigley RF, Griffin LV, Christensen L, Vandenbosch R. Osteon interfacial strength and histomorphometry of equine cortical bone. J Biomech. 2006;39(9):1629-1640.
2002	Egerer AK. The Relationship Between the Osteonal Cement Line and Bone Strength [PhD thesis]. Loma Linda University; June 2002.
1984	Bertram JE. Fracture Toughness Design in Equine Hoof Wall [Master's thesis]. Vancouver, BC: University of British Columbia; June 1984.
2007	Bigley RF. Volume Effects on Strength and Fatigue Life of Equine Cortical Bone [PhD thesis]. Davis, University of California; September 2007.
2008	Creel JA. Influence of Crack Propagation Orientation on R-Curve Fracture Mechanics of Equine Cortical Bone [PhD thesis]. Davis, University of California; 2008.
1993	Boyce TM. Aging Changes Within the Human Femoral Neck Cortex [PhD thesis]. University of Utah; August 1993.
1998	Yeni YN. Fracture Mechanics of Human Cortical Bone: The Relationship of Geometry, Microstructure and Composition With the Fracture of the Tibia, Femoral Shaft and the Femoral Neck [PhD thesis]. Morgantown, WV: West Virginia University; 1998.