Lambdoid suture
| Lambdoid suture | |
|---|---|
 Lambdoid suture (shown in red line) | |
 Lambdoid suture (labeled at bottom right) | |
| Details | |
| Part of | skull |
| Nerve | supraorbital nerve |
| Identifiers | |
| Latin | sutura lambdoidea |
| TA98 | A03.1.02.004 |
| TA2 | 1577 |
| FMA | 52933 |
| Anatomical terms of bone | |
The lambdoid suture (or lambdoidal suture) is a dense, fibrous
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.[1][2]
Clinical significance
At birth, the bones of the skull do not meet. If certain bones of the skull grow too fast, then
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.[citation needed
]
The lambdoid suture can be damaged by a fall backward.[2]
Etymology
The lambdoid suture is named due to its uppercase lambda-like shape.
Additional images
-
Animation. Lambdoid suture shown in red. -
Parietal bones (above) and occipital bone (below). -
Skull seen from behind. Showing Λ-like shape of the lambdoid suture. -
Lambdoid suture seen from above. -
Lambdoid suture seen from inside. -
Lambdoid suture, medial view. Indicated by yellow line. -
Lambdoid suture with Wormian bones, seen from behind.
References
- ISBN 978-0-7020-3100-7.)
{{cite book}}: CS1 maint: date and year (link - ^ ISBN 978-0-7020-3100-7.)
{{cite book}}: CS1 maint: date and year (link
- "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).
External links
Wikimedia Commons has media related to Lambdoid sutures.
- Anatomy figure: 22:01-03 at Human Anatomy Online, SUNY Downstate Medical Center (Posterior)
- Anatomy figure: 22:03-02 at Human Anatomy Online, SUNY Downstate Medical Center (Lateral)
- "Anatomy diagram: 34256.000-2". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2014-01-01.
