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Morphology, morphometry and spatial distribution of secondary osteons in equine femur

Zedda, Marco and Lepore, Gianluca and Biggio, Giovanni and Gadau, Sergio Domenico and Mura, Emilio and Farina, Vittorio (2014) Morphology, morphometry and spatial distribution of secondary osteons in equine femur. Anatomia, histologia, embryologia , in press. ISSN 0340-2096. eISSN 1439-0264. Article.

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DOI: 10.1111/ahe.12141

Abstract

A high number of differences exist in bone histological features depending on the species, breed, age and bone. Moreover, osteon distribution may vary in the different sides of a bone as a consequence of different biomechanical strains. The aim of this work was to study the distribution and morphology of osteons in different sides of the equine femoral diaphysis with the attempt to correlate them to the main strains operating on them. The following parameters of secondary osteons and Haversian canals were measured in the transverse sections of diaphyses: perimeter, area, minimum and maximum diameter, eccentricity and osteon population density. A typical Haversian tissue was observed with elliptic secondary osteons consisting in about 10 well-defined lamellae surrounding a circular Haversian canal. Quantitative analysis displays a different population density of secondary osteons depending on the side. The caudal and medial sides, where compression strains are higher, have more secondary osteons in comparison with the cranial and lateral sides, where tension strains are prevalent. These data suggest that secondary osteon population density may depend on the predominant strains. Even the elliptical shape of secondary osteons may be related to biomechanical strains, as their major axes are oriented cranio-caudally parallel to prevalent strains.

Item Type:Article
ID Code:10337
Status:In Press
Refereed:Yes
Uncontrolled Keywords:Secondary osteons,n equine femur, osteon distribution, biomechanical strains
Subjects:Area 07 - Scienze agrarie e veterinarie > VET/01 Anatomia degli animali domestici
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Medicina Veterinaria
Publisher:Blackwell
ISSN:0340-2096
eISSN:1439-0264
Deposited On:18 Nov 2014 10:53

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