What shape is the anterior fontanelle in infants?

The anterior fontanelle, also known as the frontal fontanelle, is typically shaped like a diamond in infants. This distinctive shape is due to the junction of the two frontal bones and the two parietal bones at the top of an infant's skull. The anterior fontanelle usually closes between 9 to 18 months of age as the bones of the skull fuse together.

Understanding the shape and location of the anterior fontanelle is essential for midwifery practice because it provides valuable information about the health and development of the infant. For instance, abnormalities in the size or tension of the fontanelle can indicate issues such as increased intracranial pressure or dehydration. Recognizing the normal diamond shape helps practitioners assess head growth and overall well-being during early infancy.