Lambdoid suture craniosynostosis is the least common of all types of craniosynostosis. Lambdoid suture synostosis causes premature closure and flatness on the affected side behind the baby's head. This causes an outward protrusion of the mastoid bone behind the ear on the affected side, as well as a downward sloping of the ear. Special cases like this cause the skull to tilt sideways to the left or right.
To release the narrowed lambdoid sutures, two incisions are made behind the baby's skull, which are 2 or 3 cm wide. One is on the midline and the other is just behind the ear on the affected side. The narrowed lambdoid suture is removed with the help of an endoscope. As with other sutures, the incisions are closed with sutures that are absorbed under the skin and do not need to be removed.
