Sharpey's fibres

Sharpey's fibres

Sharpey's fibres (bone fibres, or perforating fibres) are a matrix of connective tissue consisting of bundles of strong collagenous fibres connecting periosteum to bone. They are part of the outer fibrous layer of periosteum, entering into the outer circumferential and interstitial lamellae of bone tissue.

In the teeth, Sharpey's fibres are the ends of principal fibres that insert into the cementum. A study on rats suggests that the three-dimensional structure of Sharpey's fibres intensifies the continuity between the periodontal ligament fibre and the alveolar bone (tooth socket), and acts as a buffer medium against stress.Sharpey's Fibres in the primary acellular cementum are mineralized fully; those in cellular cementum and bone are mineralized only partially at their periphery. [cite journal
last = Kuroiwa
first = M
authorlink =
coauthors = Chihara K, Higashi S
title = Electron microscopic studies on Sharpey's fibers in the alveolar bone of rat molars
journal = Kaibogaku Zasshi
volume = 69
issue = 6
pages = 776–82
publisher =
date = 1994
url =
doi =
pmid = 7887126
accessdate = ]

In the skull the main function of Sharpey's fibres is to bind the cranial bones in a firm but moveable manner; they are most numerous in areas where the bones are subjected to the greatest forces of separation. In the spine, similar fibres join the intervertebral disk to the adjacent vertrebrae. [cite web
url=http://www.macdonaldpublishing.com/
title=Backache: From Occiput to Coccyx
author=Gerald L. Burke
publisher=MacDonald Publishing
accessdate=2008-03-14 ] Each fibre is accompanied by an arteriole and one or more nerve fibres. [cite journal
last = Retzlaff
first = EW
authorlink =
coauthors = Mitchell FL, Upledger JE
title = Efficacy of Cranial Sacral Manipulation: The Physiological Mechanism of the Cranial Sutures
journal = J Soc. Osteopaths
volume =
issue = 12
pages =
publisher =
date = 1982-3
url =
doi =
id = ISSN 0308-8766
accessdate = ]

English anatomist William Sharpey described them in 1846.

References


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