fontanelliliitoksilla

Fontanelliliitoksilla, often referred to as fontanelles, are the soft spots on a baby's skull. These are the gaps between the cranial bones where the bones have not yet fused. The largest and most prominent fontanelle is the anterior fontanelle, located at the front of the head, which is typically diamond-shaped. The posterior fontanelle is smaller, triangular, and located at the back of the head.

These fontanelles are essential for several reasons. During birth, they allow the skull to compress and mold, enabling the baby to pass through the birth canal more easily. After birth, they accommodate the rapid growth of the baby's brain. The fontanelles also allow for some flexibility in the skull, which can help protect the brain from injury.

It is normal for fontanelles to bulge slightly when a baby cries or coughs, and to pulsate with the baby's heartbeat. A sunken fontanelle can be a sign of dehydration, while a very bulging and firm fontanelle may indicate increased pressure within the skull. Parents are often advised to avoid pressing directly on the fontanelles.

The fontanelles gradually close as the baby grows. The posterior fontanelle usually closes within the first few months of life, typically between 2 and 3 months. The anterior fontanelle takes longer to close, usually between 9 and 18 months of age, and sometimes up to 24 months. This process of fusion signifies the completion of the initial bone development of the skull.