intramembranous ossification


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ossification

 [os″ĭ-fĭ-ka´shun]
formation of or conversion into bone or a bony substance.
ectopic ossification a pathological condition in which bone arises in tissues not in the osseous system and in connective tissues usually not manifesting osteogenic properties.
endochondral ossification ossification that occurs in and replaces cartilage.
heterotrophic ossification metaplastic ossification.
intramembranous ossification ossification of bone that occurs in and replaces connective tissue.
metaplastic ossification the development of bony substance in normally soft body structures; called also heterotrophic ossification.

mem·bra·nous os·si·fi·ca·tion

development of osseous tissue within mesenchymal tissue without prior cartilage formation, such as occurs in the frontal and parietal bones.

intramembranous ossification

intramembranous

within a membrane.

intramembranous ossification
see intramembranous ossification.

ossification

formation of or conversion into bone or a bony substance.

biceps brachii ossification
causes a progressive lameness of the shoulder joint of the horse. The calcification of the tendon can be identified radiologically.
ossification center
a locus in an epiphysis or other part of a bone at which ossification commences and from which it spreads over the entire section. Radiological examination can detect the appearance of each ossification center and this is of assistance in aging.
dural ossification
occurs in large and giant breed dogs. Detected radiographically, most commonly in the lumbar and cranial and caudal cervical areas, but rarely produces clinical signs. Called also ossifying pachymeningitis.
ectopic ossification
see ectopic mineralization.
enchondral ossification
ossification that occurs in and replaces cartilage.
ossification groove
located at the physeal end of the perichondrial ring of long bones. It supplies chondrocytes to the physis for the diametric growth of the bone. Called also groove of Ranvier.
intramembranous ossification
the formation of bone directly from fibrous tissue without the use of a cartilaginous model, e.g. as occurs in the parietal and frontal bones.
lateral cartilage ossification
retarded enchondral ossification
the ossification of cartilage in growing large dogs may be retarded and, at the distal ulnar growth plate, resembles premature closure of the plate; the characteristic lesion is a cone of uncalcified cartilage in the growth plate.
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