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A structural unit of bone consisting of a haversian canal and corresponding lamellae of compact bone. Also called haversian system.

[German Osteon, from Greek osteon, bone; see ost- in Indo-European roots.]
References in periodicals archive ?
The first case of Pycnodysostosis was reported by Montanari in 1923 and the core features of pycnodysostosis (Greek: pycnos = dense; dys = defective; osteon = bone) were described later by Marteaux and Lamy in 1962.
These mineralized collagen fibers are aligned and organized in different patterns to form different kinds of bone: the nonlamellar bone (in which the collagen fibers of the matrix are arranged irregularly in the form of interlacing networks) the trabecular bone (in which the spicules or trabeculae form a three-dimensional latticework with the interstices filled with embryonal connective tissue or bone marrow) and the cortical bone (consisting of a repeating structure called an osteon, in which a central canal is surrounded by concentric layers of lamellae; collagen fibers in a particular lamella run parallel to each other, but the orientation of collagen fibers within other lamellae is oblique).
The Greek word osteon, meaning "bone," and its relatives ostreon, "oyster," and ostrakon, are names for hard, brittle objects.
Effects of Calcium phosphate/chitosan composite on bone healing in rats: calcium phosphate induces osteon formation.
In rare cases Haversian plates do not form a complete ring around the Haversiancanal lumen; that is why the osteon wall at discontinuous sections has fewer Haversian plates.
PFCs are fluorescent calcium chelating agents taken up by live maturing osteoid and remain until the osteon is resorbed.
INTRODUCTION: The word osteomyelitis originates from the ancient Greek words osteon (Bone) and mylinos (Marrow) and means infection of medullary portion of the bone, osteomyelitis was first described in 1852 by a French surgeons Edouard Chassaignac.
At this stage of the experiment intense neoangiogenesis is observed in the regenerated bone, as well as the phase of organogenesis and bone tissue remodeling, as evidenced by the reorganization of rough-fibred bone tissue trabeculae into primary osteon structures (Figure 2, b).
Regressive changes in the compact tissues are also confirmed by dilatation of less-mineralized bone material, internal and external surrounding plates while simultaneous narrowing of osteon layer.
Ong, "Clinical evaluations of OSTEON as a new alloplastic material in sinus bone grafting and its effect on bone healing," Journal of Biomedical Materials Research B: Applied Biomaterials, vol.
5] The word osteoporosis is derived from the Greek word osteon for bone and poros for porosity indicating that the bone becomes more porous.