The brine gate of newborns is very fragile, and at this time, mothers need to take good care of their babies' brine gates. The jumping of the baby's brine door looks very scary. Everyone should not forcefully pat the baby's head and avoid the baby's head being hit by foreign objects. What is the size of the fontanelle in a premature baby who is one month old? What is the normal development process of the fontanelle? Let's take a look together.
What is the size of the fontanelle in a premature baby who is one month old
The size of the anterior fontanelle in newborns and infants varies among individuals. Generally, when a baby is born, the size of the anterior fontanelle is 1.5-2 centimeters, which is diamond shaped; At around 6 months, the maximum height reaches 2.5-3 centimeters. Gradually ossify and shrink after 6-7 months. A child's fontanelle should be completely closed around the age of 1 to 1.5, and no later than 2 years old. It is abnormal for the fontanelle to close too early or too late, and parents should take it seriously.
It is recommended that parents measure their head circumference every 2 months and take their babies for developmental tests to see if their head circumference is growing at a normal rate and if their overall development level is appropriate for their age. If the head circumference is normal, regardless of whether the fontanelle closes early or late, the baby has no major problems. Otherwise, medical treatment is needed.
Normal development process of fontanelle
The human skull is composed of six bones, and the anterior and posterior fontanelles are already formed when the baby is born.
When a baby is born, the skull is not fully developed, and there are gaps between the bones that connect to each other. After the baby is born, two special areas are formed at the top of the head and the back of the pillow, which are covered only by the scalp and have no bones. These two special areas are medically referred to as the anterior fontanelle and posterior fontanelle, respectively.
Under normal circumstances, a baby's anterior fontanelle is approximately 1.5 × 2cm in size and appears flat or slightly sunken in appearance. In the first few months after birth, the anterior fontanelle will slightly increase with the gradual increase of head circumference, and gradually become smaller due to the gradual ossification of the skull after 6 months. Usually, when a baby reaches the age of 1 to 1.5, the anterior fontanelle is basically closed. The posterior fontanelle is very small and usually not very noticeable. It mostly closes around 2-3 months after the baby is born.
The fontanelle of a baby is an important window reflecting their physical health. By observing this small window within the first year of a baby's life, various diseases can be detected early, allowing the baby to receive diagnosis and treatment as soon as possible. Therefore, mothers should have a better understanding of the normal development process of their baby's fontanelle and the abnormal phenomena that are prone to occur.
What is the size of the fontanelle in a premature baby who is one month old? The size of the baby's brine door varies among individuals, with half of them starting to close around six months and not fully closing until one and a half years old. If the baby's brine door closes too early or too late, it is not very good. Everyone should pay attention to the development of their baby's brine door and seek medical attention promptly if there are any abnormalities.
