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This is one of the rarest types of craniosynostosis.ĭeborah’s daughters were born with craniosynostosis. If this suture closes too early, the top of the baby’s head shape may look triangular, meaning narrow in the front and broad in the back (trigonocephaly).
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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.
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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.