PMID: 3766989Jan 1, 1986Paper

A study of lamellar organisation in juvenile and adult human bone

Anatomy and Embryology
S A Reid

Abstract

The scanning electron microscope (SEM) has been used to study the three-dimensional organisation of collagen in slices of human rib and femur which were "etched" by chick osteoclasts, mechanically isolated and grown on their surfaces in vitro. Collagen organisation in the two bones showed a spectrum of appearances, ranging from lamellae of approximately equal thickness, but alternating fibre orientations, to an almost exclusive orientation of collagen apparently in a longitudinal direction. The rib contained a smaller component of transversely oriented collagen which may be related to a different functional loading. The thickness of circumferential lamellae was less than that of osteonal lamellae in the two adult ribs examined. Also, in the rib there was a trend towards increased average lamellar thickness with age in the range studied. This may be related to the fact that more of the lamellae in the rib cortex in children have been formed circumferentially. Correlation of results obtained with the SEM and the polarised light microscope (PLM) from the same substratum demonstrated that the latter grossly exaggerated the apparent component of collagen with a transverse orientation. This will always be true unless sections compara...Continue Reading

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