Lambdoid

Lambdoid refers to the shape that resembles the Greek letter lambda (Λ). In the field of Anatomy, it is often used to describe the lambdoid suture, a type of cranial suture between the parietal and occipital bones of the skull.

Lambdoid Suture

The Lambdoid 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 named for its resemblance to the Greek letter lambda (Λ).

Structure

The lambdoid suture extends from the posterior fontanelle to the mastoid fontanelle, and continues as the sphenosquamosal suture to the pterygoid process. It is continuous with the sagittal suture at the lambda junction, where the occipital, parietal, and temporal bones meet.

Clinical significance

Abnormalities in the lambdoid suture can lead to conditions such as craniosynostosis, where the sutures in a baby's skull fuse prematurely. This can result in changes to the shape of the skull and potentially cause pressure on the brain.

See also

• Cranial sutures
• Sagittal suture
• Coronal suture
• Squamosal suture

References

Lambdoid Resources
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