Lambdoid suture

Last revised by Craig Hacking on 12 Feb 2023

The lambdoid suture is the junction between the superior border of the squamous occipital bone and the posterior borders of the right and left parietal bones. It normally fuses at approximately 26 years of age.

At the junction of sagittal and lambdoid suture, the posterior fontanelle is located which is open at birth and usually fuses at around 2-3 months after birth. The junction of the sagittal and lambdoid sutures after fontanelle closure is known as the lambda.

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