Outstanding meeting paper: high-speed photography of the development of microdamage in trabecular bone during compression


Thurner, Philipp J., Erickson, Blake, Schriock, Zachary, Langan, John, Scott, Jeff, Zhao, Maria, Weaver, James C., Fantner, Georg E., Turner, Patricia, Kindt, Johannes H., Schitter, Georg, Morse, Daniel E. and Hansma, Paul K. (2006) Outstanding meeting paper: high-speed photography of the development of microdamage in trabecular bone during compression. Journal of Materials Research, 21, (5), 1093-1100. (doi:10.1557/JMR.2006.0139).

Download

Full text not available from this repository.

Original Publication URL: http://dx.doi.org/10.1557/JMR.2006.0139

Description/Abstract

The mechanical properties of healthy and diseased bone tissue are extensively studied in mechanical tests. Most of this research is motivated by the immense costs of health care and social impacts due to osteoporosis in post-menopausal women and the aged. Osteoporosis results in bone loss and change of trabecular architecture, causing a decrease in bone strength. To address the problem of assessing local failure behavior of bone, we combined mechanical compression testing of trabecular bone samples with high-speed photography. In this exploratory study, we investigated healthy, osteoarthritic, and osteoporotic human vertebral trabecular bone compressed at high strain rates. Apparent strains were found to transfer into to a broad range of local strains. Strained trabeculae were seen to whiten with increasing strain. Comparison of whitened regions seen in high-speed photography sequences with scanning electron micrographs showed that the observed whitening was due to the formation of microcracks. From the results of a motion energy filter applied to the recorded movies, we saw that the whitened areas are, presumably, also areas of high deformation. In summary, high-speed photography allows the detection of microdamage in real time, leading toward a better understanding of the local processes involved in bone failure.

Item Type: Article
ISSNs: 0884-2914 (print)
Related URLs:
Keywords: bone, fracture, mechanical properties, high-speed photography, microdamage
Subjects: Q Science > Q Science (General)
R Medicine > RZ Other systems of medicine
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Bioengineering Sciences
ePrint ID: 48806
Date Deposited: 12 Oct 2007
Last Modified: 27 Mar 2014 18:32
URI: http://eprints.soton.ac.uk/id/eprint/48806

Actions (login required)

View Item View Item