It is the most common type of craniosynostosis. When this suture closes too early, the baby’s head will grow long and narrow (scaphocephaly). Sagittal synostosis– The sagittal suture runs along the top of the head, from the baby’s soft spot near the front of the head to the back of the head.The types of craniosynostosis depend on what sutures join together early. This can lead to a build-up of pressure inside the skull. In these instances, the brain might not have enough room to grow to its usual size. Sometimes, though, more than one suture closes too early. When that happens, the skull will have an abnormal shape, although the brain inside the skull has grown to its usual size. In the other parts of the skull where the sutures have not joined together, the baby’s head will continue to grow. When a suture closes and the skull bones join together too soon, the baby’s head will stop growing in only that part of the skull. This can limit or slow the growth of the baby’s brain. When this occurs, the suture is said to “close.” In a baby with craniosynostosis, one or more of the sutures closes too early. Around two years of age, a child’s skull bones begin to join together because the sutures become bone. These sutures allow the skull to grow as the baby’s brain grows. The spaces between a typical baby’s skull bones are filled with flexible material and called sutures. As the baby’s brain grows, the skull can become more misshapen. This happens before the baby’s brain is fully formed. Click here to view a larger image What is Craniosynostosis?Ĭraniosynostosis is a birth defect in which the bones in a baby’s skull join together too early.
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