An infant’s skull is comprised of boney plates separated by sutures. Cranial sutures are strong, fibrous tissues that hold the bones together and they intersect in large soft spots known as fontanelles. The infant’s skull does not completely fuse until the age of two thereby granting the brain time to grow. Once the bones fuse, the sutures no longer remain flexible.
Craniosynostosis is due to premature fusion of one or more cranial sutures. It affects 1 in every

