La microvascularisation extra-osseuse et intra-osseuse du sternum de l'enfant [Extra-osseous and intra-osseous microvascularization of the sternum of the child].

Details

Serval ID
serval:BIB_9B93FB7C80D5
Type
Article: article from journal or magazin.
Collection
Publications
Title
La microvascularisation extra-osseuse et intra-osseuse du sternum de l'enfant [Extra-osseous and intra-osseous microvascularization of the sternum of the child].
Journal
Archives d'anatomie, d'histologie et d'embryologie Normales et Expérimentales
Author(s)
Simeoni U., Sick H., Koritke J.G.
ISSN
0249-5554 (Print)
ISSN-L
0249-5554
Publication state
Published
Issued date
1988
Peer-reviewed
Oui
Volume
71
Pages
9-41
Language
french
Notes
Publication types: English Abstract ; Journal Article ; Review Publication Status: ppublish
Abstract
The microvascularization of the sternum of the child has been studied by a method of India ink injection and by histology. Extra-osseous vasculature includes vascular pedicles and sternal vascular networks. Vascular anterior and posterior pedicles issue from internal mammary vessels. Sternal anterior and posterior networks are disposed on the faces of the sternum and are divided in a superficial one and a deep one; both are included in the perichondrium. In newborns and in young infants, vascular structures looking like baskets are affixed to the deep sternal network. It is unlikely that they intervene in the constitution of the adult pattern of the sternal vasculature. The early complete development of sternal networks contrasts with the existence of evolutive characteristics of the intra-osseous vasculature. Intra-osseous vasculature includes the cartilage canal vessels and the vessels of the ossification centers. Cartilage canals are provided with an axial artery, issued from the deep sternal network, which produces short capillaries which continue in peripheral sinuses. Cartilage canals permit the penetration of perichondral tissue deep in the cartilage of the developing sternum, allowing the formation of the ossification center. The ossification center is vascularized by centrifugal arteries, issued from the cartilage canal artery, and disposed in a radiant pattern. They continue, through a conical progressive dilatation, into a sinusoid network, which presents a convergent disposition towards the center of the ossification point. Vascular events precede ossification. Hematopoietic development is consecutive to the vascular events too. The slenderness of vascular pedicles contrasts in neonates with the wide development of the sinusoid network. Adipose tissue is rare in the bone marrow sternum of the child. Secondary evolution of the ossification center vasculature permits its connections with the deep sternal vascular network, with adjacent cartilage canals, and with adjacent ossification centers. Progressively, the number and the importance of the peripheral pedicles of the ossification centers increase. Thus, a multiple and centripetal vascular provision takes the place of the initial, unique, centrifugal one. These modifications correspond to the transition from the vascular pattern of an expanding structure (the ossification center) to the one which is adapted to the full expression of its hematopoietic function.
Keywords
Adolescent, Child, Child, Preschool, Humans, Infant, Infant, Newborn, Microcirculation/anatomy & histology, Osteogenesis/physiology, Sternum/anatomy & histology, Sternum/blood supply
Pubmed
Create date
22/02/2015 11:23
Last modification date
20/08/2019 15:02
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