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Can you feel the bregma?

By Lucas Hayes

Can you feel the bregma?

Palpate the vertex of the skull with your thumb or fingerpads. Starting from the bregma, lying in a slight depression, palpate bilaterally (both ways at the same time) sideways along the coronal suture. You are feeling the junction between the parietal and the frontal bones.

What does bregma mean?

Definition of bregma : the point of junction of the coronal and sagittal sutures of the skull.

What is the bregma point?

The bregma is located at the intersection of the coronal suture and the sagittal suture on the superior middle portion of the calvaria. It is the point where the frontal bone and the two parietal bones meet.

How do you identify bregma?

In this method, a digital picture of the exposed skull cap is analyzed by a computer. The curve is mathematically fitted to the outline of the coronal suture, and the brain midline is delineated based on the temporal ridges of the skull. The crossing of these two lines is defined as the bregma.

Is Bregma a fontanelle?

The bregma is the midline bony landmark where the coronal and sagittal sutures meet, between the frontal and two parietal bones. It is the anterior fontanelle in the neonate and closes in the second year 2 (typically around 18 months after birth).

What is the clinical importance of bregma?

Clinical significance The bregma is often used as a reference point for stereotactic surgery of the brain. Also, examination of an infant includes palpating the anterior fontanelle. A sunken fontanelle indicates dehydration, whereas a very tense or bulging anterior fontanelle indicates raised intracranial pressure.

At what age does posterior fontanelle close?

The posterior fontanelle usually closes by age 1 or 2 months. It may already be closed at birth. The anterior fontanelle usually closes sometime between 9 months and 18 months.

Can you feel coronal suture?

When both coronal sutures are affected, a ridge can be felt on both sides of the head running from the top of the skull down the sides in front of the ears. Depending how early this is discovered, the forehead will appear flat and under-projected.