Lambdoid suture

Lambdoid suture is a cranial suture found at the back of the skull, separating the occipital bone from the two parietal bones. It is named for its resemblance to the Greek letter Lambda due to its inverted V-shape.

Anatomy

The lambdoid suture extends from the mastoid process of the temporal bone to the posterior fontanelle in the midline and then to the mastoid process of the opposite temporal bone. It is continuous with the sagittal suture at the top of the skull and the squamous suture at the sides.

Clinical significance

The lambdoid suture is one of the last sutures to close, typically around the second year of life. Premature closure of the lambdoid suture, a condition known as lambdoid synostosis, can result in a condition called plagiocephaly, characterized by a flattened or misshapen head.

See also

• Cranial sutures
• Occipital bone
• Parietal bone
• Sagittal suture
• Squamous suture
• Plagiocephaly
• Lambdoid synostosis

References

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