contributor author | Elise F. Morgan | |
contributor author | Tony M. Keaveny | |
contributor author | John J. Lee | |
date accessioned | 2017-05-09T00:15:18Z | |
date available | 2017-05-09T00:15:18Z | |
date copyright | August, 2005 | |
date issued | 2005 | |
identifier issn | 0148-0731 | |
identifier other | JBENDY-26519#557_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/131351 | |
description abstract | Damage accumulation plays a key role in weakening bones prior to complete fracture and in stimulating bone remodeling. The goal of this study was to characterize the degradation in the mechanical properties of cortical bone following a compressive overload. Longitudinally oriented, low-aspect ratio specimens (n=24) of bovine cortical bone were mechanically tested using an overload-hold-reload protocol. No modulus reductions greater than 5% were observed following overload magnitudes less than 0.73% strain. For each specimen, changes in strength and Poisson’s ratio were greater (p=0.02) than that in modulus by 10.8- and 26.6-fold, respectively, indicating that, for the specimen configuration used in this study, longitudinal elastic modulus is one of the least sensitive properties to a compressive overload. Residual strains were also proportionately greater by 6.4-fold (p=0.01) in the transverse than axial direction. These results suggest that efforts to relate microcrack density and morphology to changes in compressive mechanical properties of cortical bone may benefit from considering alternative parameters to modulus reductions. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Sensitivity of Multiple Damage Parameters to Compressive Overload in Cortical Bone | |
type | Journal Paper | |
journal volume | 127 | |
journal issue | 4 | |
journal title | Journal of Biomechanical Engineering | |
identifier doi | 10.1115/1.1933916 | |
journal fristpage | 557 | |
journal lastpage | 562 | |
identifier eissn | 1528-8951 | |
keywords | Stress | |
keywords | Poisson ratio | |
keywords | Mechanical properties | |
keywords | Bone | |
keywords | Fracture (Process) | |
keywords | Elastic moduli AND Microcracks | |
tree | Journal of Biomechanical Engineering:;2005:;volume( 127 ):;issue: 004 | |
contenttype | Fulltext | |