In some cases, osteon cluster has been seen, and enclosing of two and sometimes three osteons with common Haversian
plates has been noted.
All the bones exhibit a mature histomorphology, characterized at least by a combination of three or more of the following characters: (i) extensive remodelling of the primary cortex by dense Haversian
bone; (ii) presence of an outermost layer of highly organized, slow-growing primary bone, poorly vascular, with mature primary osteons; (iii) presence of growth rings which denote that the animal reached sexual maturity and lived for years; (iv) presence of a nonvascularized external fundamental system (EFS) at the periosteal surface, and (v) the presence of a greatly expanded medullar cavity lined by endosteal bone (Horner et al.
11) There has been research to also indicate the nutrient rich Haversian
canals within bone can act as pain-sensitive structures (29), allowing for deep-seated bone pain in daily activities.
Cortical involvement by tumor was manifested histologically by endosteal erosion and progressive cortical destruction by tumor, which abutted onto eroded bone and also permeated into haversian
and Volkmann's canals.
Kustav Nag from Kolkata has put together a maze of white friendship bands stapled together -- the creation looks like a macroscopic version of Haversian
canals in a human bone.
Previous studies have shown that ceramic calcium phosphate implants with macropores (> 100 [micro]m in diameter) allowed ingrowth of bone tissue with functional haversian
systems and facilitated osseointegration (8-11).
Mature NHO mimics normal bone both radiologically and histologically and includes Haversian
canals, cortex, blood vessels and bone marrow with a very low amount of hematopoiesis (1,6).
The microstructure of the bovine cortical bone is classified into two tissues, plexiform and haversian
Influence of preservation on some mechanical properties of human haversian
Lesions can invade the cortical bone, traverse the haversian
system and cause a large soft-tissue mass outside the bone.
Microscopically, whale bone has a more pronounced Haversian
system (the network of spaces through which blood vessels ramify in bone) throughout the cortex.
They speculated that the region of lower Pb concentration has lower blood flow in the Haversian
canals and, consequently, less Pb available for uptake into bone matrix during bone remodeling (Todd et al.