We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is the Bregma?

Mary McMahon
Updated May 17, 2024
Our promise to you
WiseGeek is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WiseGeek, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

The bregma is the point on the skull where the sagittal and coronal sutures intersect. It is located in the high forehead. This structure changes over time as people develop and the older people are, the less distinguishable the bregma will be. It can be used as a reference point for certain types of brain surgery, as the sutures of the skull provide a frame of reference for the structures in the underlying brain. Understanding the anatomy of the skull is important for neurosurgeons, as they may need to make repairs to the skull or access the brain through the skull to treat patients.

At birth, the bones of the skull are separated. This allows the skull to deform slightly during labor so that the baby can be born, and it provides some room to grow. The area where the bregma will be is marked by the anterior fontanelle, a soft spot between the frontal and parietal bones. By the age of two, this fontanelle is usually entirely closed and the bregma has formed where the bones meet up. Over time, the bone ossifies or hardens, along with the sutures in the skull, and the distinctive lines formed by the sutures start to smooth out.

In early childhood, the fontanelles can be palpated as part of a diagnostic evaluation during a routine baby exam or an exam to determine why a baby is not feeling well. If the fontanelle feels shrunken, it can indicate that a baby is dehydrated. Swelling and hardness can be indicative of high intracranial pressure or may mean that a baby has been crying vigorously.

If the fontanelle fails to close by the age of two, it is an indicator that the child may have a congenital condition. The most likely cause is cleidocranial dysostosis, a bone disorder characterized by underdeveloped bones. Some people with this condition have missing collarbones, and may experience other skeletal problems. It is relatively rare in the general population and treatment options vary depending on the severity of the condition.

In brain surgery, surgeons want to hit the right spot on the first try. Using the sutures, along with medical imaging studies of the patient's brain as a reference, they can select an appropriate point to make an incision so that they can access the brain. The bregma is one of the points on the skull that can be used for orientation before and during surgery.

WiseGeek is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Mary McMahon
By Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a WiseGeek researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Discussion Comments

Mary McMahon

Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a...

Learn more
WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.