A model for the composite nanostructure of bone suggested by high-resolution transmission electron microscopy
Cressey, B.A. and Cressey, G. (2003) A model for the composite nanostructure of bone suggested by high-resolution transmission electron microscopy. Mineralogical Magazine, 67, (6), 1171-1182. (doi:10.1180/0026461036760156).
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We have imaged the spatially-preserved microtexture of biogenic apatite, retained together with its collagen template, in non-demineralized human bone using high-resolution transmission electron microscopy. Using ion-beam thinning, a specimen preparation method generally employed for inorganic minerals rather than for biological materials, we have imaged a composite nanostructure of bone not previously reported, and we propose a model for this nano-architecture that involves a box-construction of apatite plates and apatite sheets. This observation provides a new understanding of bone strength at the nanometre scale and suggests how post mortem enhancement of this texture by recrystallization probably accounts for the durability of ancient bone. Modern sheep bone (a close analogue for recently dead human bone) imaged in the same way also shows evidence of this composite architecture.
|Keywords:||bone, apatite, transmission electron microscopy, mineral crystals, organic matrix, lamellar bone, organization, collagen, hydroxyapatite, tomography|
|Subjects:||Q Science > QD Chemistry
Q Science > QM Human anatomy
|Divisions:||University Structure - Pre August 2011 > School of Chemistry
|Date Deposited:||24 Feb 2006|
|Last Modified:||01 Apr 2012 01:06|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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