While studying the bone tissue, we drew attention to the osteons' shape, their location, the shape of the Haversian
canals' transection, osteons' transformation, and other issues, the description of which, undoubtedly, is important in the comparative histology.
The inner and middle cortex is heavily remodelled by Haversian
bone resulting from the secondary reconstruction of the primary periosteal bone.
The rubbery matrix found in people deficient of cholecalciferol does not provide sufficient trabecular and collagenous support but instead hydrates and expands the bone, causing an outward pressure on the internal Haversian
canals and external periosteal covering, richly innervated with sensory pain fibres.
structures acquired characteristic typical to young bones.
From the 30th to the 90th POD, the defect margins presented a compact bone structure with haversian
systems and osteocytes (Figures 2 and 3).
Exudates were spread between bone trabecules and penetrated into Haversian
The cortical microstructure contains Haversian
canals, lacunae and vascular canals, which are defined as pores or cavities of the cortical bone.
In their turn, intra-osteon potentials obtained are uneven: a potential decrease has been observed at the level of Haversian
canals, close to the compressed side, and their growth on the opposite, tensioned side of the bone.
Such an osteoclastic activity occurs in Haversian
channels of cortical bone and subperiostal and endosteal surfaces.
Histological examination of this specimen revealed metaplastic ossification to lamellar bone with eosinophilic ossified matrix, lacunar spaces and haversian
vascular canals characteristic of bone (Fig.
It consists of a network of lamellae parallel to each other mostly known as Haversian
In the rare case of a biopsied bone island, the histology has shown compact lamellar bone with prominent Haversian
The compact bone around it and in the diaphysis is formed by a series of Haversian
Under polarized light microscopy and especially axial sections, the Haversian
systems of the periosteum were of different sizes, had variable degrees of maturation, and contained immature bone.
10:45 USING TETRACYCLINE TO MEASURE HAVERSIAN
SYSTEI FORMATION RATES