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Abstract
Trabecular bone is a cellular composite material comprising primarily of mineral and organic phases with their content ratio known to change with age. Therefore, the contribution of bone constituents on bone’s mechanical behaviour, in tension and compression, at varying load levels and with changing porosity (which increases with age) is of great interest, but remains unknown. We investigated the mechanical response of demineralised bone by subjecting a set of bone samples to fully reversed cyclic tension–compression loads with varying magnitudes. We show that the tension to compression response of the organic phase of trabecular bone is asymmetric; it stiffens in tension and undergoes stiffness reduction in compression. Our results indicate that demineralised trabecular bone struts experience inelastic buckling under compression which causes irreversible damage, while irreversible strains due to microcracking are less visible in tension. We also identified that the values of this asymmetric mechanical response is associated to the original bone volume ratio (BV/TV).
Original language | English |
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Pages (from-to) | 801-809 |
Journal | Annals of Biomedical Engineering |
Volume | 46 |
Issue number | 6 |
Early online date | 27 Mar 2018 |
DOIs | |
Publication status | Published - 2018 |
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Dive into the research topics of 'From tension to compression: Asymmetric mechanical behaviour of trabecular bone's organic phase'. Together they form a unique fingerprint.Projects
- 1 Finished
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A novel diagnostic tool: from structural health monitoring to tissue quality prediction
1/10/13 → 31/03/17
Project: Research
Datasets
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Characterisation of mechanical behaviour of demineralised and deproteinised trabecular bone samples
Pankaj, P. (Creator) & Xie, S. (Creator), Edinburgh DataShare, 18 Apr 2018
DOI: 10.7488/ds/2339
Dataset
Profiles
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Pankaj Pankaj
- School of Engineering - Personal Chair of Computational Biomechanics
Person: Academic: Research Active