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Lambdoid suture

Connective tissue between the parietal bones and the occipital bone of the skull

Field	Value
Name	Lambdoid suture
Latin	sutura lambdoidea
Image	Lambdoid suture - skull - posterior view.png
Caption	Lambdoid suture, posterior view
Image2	WhiteDesertSkullCropped - Lambdoid suture.png
Caption2	Lambdoid suture (labeled at bottom right)
PartOf	Skull	Nerve=Supraorbital nerve

The lambdoid suture, or lambdoidal suture, is a dense, fibrous connective tissue joint on the posterior aspect of the skull that connects the parietal bones with the occipital bone. It is continuous with the occipitomastoid suture.

Structure

The lambdoid suture is between the paired parietal bones and the occipital bone of the skull. It runs from the asterion on each side.

Nerve supply

The lambdoid suture may be supplied by a branch of the supraorbital nerve, a branch of the frontal branch of the trigeminal nerve.

Clinical significance

At birth, the bones of the skull do not meet. If certain bones of the skull grow too fast, then craniosynostosis (premature closure of the sutures) may occur. This can result in skull deformities. If the lambdoid suture closes too soon on one side, the skull will appear twisted and asymmetrical, a condition called "plagiocephaly". Plagiocephaly refers to the shape and not the condition. The condition is craniosynostosis.

The lambdoid suture can be damaged by a fall backward.

Etymology

The lambdoid suture is named due to its uppercase lambda-like shape.

Additional images

File:Lambdoid suture - animation03.gif|Animation. Lambdoid suture shown in red. File:Lambdoid suture - animation05.gif|Parietal bones (above) and occipital bone (below). File:Sobo 1909 46 - Lambdoid suture.png|Lambdoid suture seen from above. File:Sobo 1909 47 - Lambdoid suture.png|Lambdoid suture seen from inside. File:Skull - midsaggital section P.2005 - Lambdoid suture.png|Lambdoid suture, medial view. Indicated by yellow line. File:Lambdoid suture.jpg|Lambdoid suture with Wormian bones, seen from behind.

References

"Sagittal suture." Stedman's Medical Dictionary, 27th ed. (2000).
Moore, Keith L., and T.V.N. Persaud. The Developing Human: Clinically Oriented Embryology, 7th ed. (2003).

References

(2009-01-01). "Manual Therapy for the Cranial Nerves". [[Churchill Livingstone]].
(2009-01-01). "Manual Therapy for the Cranial Nerves". [[Churchill Livingstone]].

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

bones-of-the-head-and-neck cranial-sutures human-head-and-neck joints joints-of-the-head-and-neck skeletal-system skull

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