It is continuous with the occipitomastoid suture, which connects the occipital bone with the temporal bones.
This article looks at the anatomy of the lambdoid suture, its function, and associated conditions.
The lambdoid suture gets its name from its resemblance to the uppercase Greek letter lambda ().
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Like all cranial sutures, the lambdoid suture is made up of dense, fibrous bands of tissue.
This line looks as if it has been stitched.
If the sutures close too early, this may lead to abnormalities in development.
It has no motor or sensory function.
It is simply there to hold the bones together.
There are different types of craniosynostosis, depending on which sutures fuse together too early.
These include:
Posterior plagiocephaly and lambdoid synostosis arent always one and the same.
Posterior plagiocephaly can also be triggered by lambdoid synostosis.
Treatment
Cases of lambdoid synostosis can range from mild to severe.
Some cases may require surgery, usually within the first year of life.
Keep in mind that serious interventions are not always indicated.
In mild cases, special medical helmets can help mold a babys head into a more normal shape.
Frequently Asked Questions
Where is the lambdoid suture?
The lambdoid suture is located at the back of the head.
It forms the top border of the occipital bone and the rear border of the two parietal bones.
What does the lambdoid suture do?
It is continuous with the occipitomastoid suture, which connects the occipital bone with the temporal bones.
How are craniosynostosis and the lambdoid suture related?
The lambdoid suture closes as part of normal development.
However, if the lambdoid suture closes too early, it can cause lambdoid synostosis.
How common is lambdoid synostosis?
Lambdoidis one of the least common types of craniosynostosis.
Tye G, Fearon J, Rhodes J.Craniosynostosis of the lambdoid suture.Semin Plast Surg.
2015;35(5):1585-1601. doi:10.1148/rg.2015140177
Johns Hopkins Medicine.Craniosynostosis.
Centers for Disease Control and Prevention.Facts about craniosynostosis.
Kalra R, Walker M.Posterior plagiocephaly.Childs Nervous System.
2012;28(9):1389-1393. doi:10.1007/s00381-012-1784-y
Oregon Health & Science University, Doernbecher Childrens Hospital.Pediatric lambdoidal synostosis.
