Document Detail


The effect of hydration on mechanical anisotropy, topography and fibril organization of the osteonal lamellae.
MedLine Citation:
PMID:  24332267     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The effect of hydration on the mechanical properties of osteonal bone, in directions parallel and perpendicular to the bone axis, was studied on three length scales: (i) the mineralized fibril level (~100nm), (ii) the lamellar level (~6µm); and (iii) the osteon level (up to ~30µm).We used a number of techniques, namely atomic force microscopy (AFM), nanoindentation and microindentation. The mechanical properties (stiffness, modulus and/or hardness) have been studied under dry and wet conditions. On all three length scales the mechanical properties under dry conditions were found to be higher by 30-50% compared to wet conditions. Also the mechanical anisotropy, represented by the ratio between the properties in directions parallel and perpendicular to the osteon axis (anisotropy ratio, designated here by AnR), surprisingly decreased somewhat upon hydration. AFM imaging of osteonal lamellae revealed a disappearance of the distinctive lamellar structure under wet conditions. Altogether, these results suggest that a change in mineralized fibril orientation takes place upon hydration.
Authors:
A Faingold; S R Cohen; R Shahar; S Weiner; L Rapoport; H D Wagner
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-11-25
Journal Detail:
Title:  Journal of biomechanics     Volume:  -     ISSN:  1873-2380     ISO Abbreviation:  J Biomech     Publication Date:  2013 Nov 
Date Detail:
Created Date:  2013-12-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0157375     Medline TA:  J Biomech     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2013 Published by Elsevier Ltd.
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