Bregma
Meeting point of the coronal suture and the sagittal suture of the skull
title: "Bregma" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["human-anatomy", "skull"] description: "Meeting point of the coronal suture and the sagittal suture of the skull" topic_path: "science/biology" source: "https://en.wikipedia.org/wiki/Bregma" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Meeting point of the coronal suture and the sagittal suture of the skull ::
::data[format=table title="Infobox anatomy"]
| Field | Value |
|---|---|
| Name | Bregma |
| Latin | bregma |
| Image | Kort-lang-skalle.gif |
| Caption | Superior view of the calvarium, bregma located at the intersection of the coronal and sagittal sutures. |
| Precursor | Anterior fontanelle |
| System | Skeletal system |
| :: |
| Name = Bregma | Latin =bregma | Image = Kort-lang-skalle.gif | Caption = Superior view of the calvarium, bregma located at the intersection of the coronal and sagittal sutures.
- Coronal Suture
- Sagittal Suture
- Lambdoid Suture (Lambda also visible at the intersection of the lambdoid suture by the sagittal suture.) | Precursor =Anterior fontanelle | System =Skeletal system | Artery = | Vein = | Nerve = | Lymph = The bregma is the anatomical point on the skull at which the coronal suture is intersected perpendicularly by the sagittal suture.
Structure
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.
Development
The bregma is known as the anterior fontanelle during infancy. The anterior fontanelle is membranous and closes in the first 18-36 months of life.
Clinical significance
Cleidocranial dysostosis
In the birth defect cleidocranial dysostosis, the anterior fontanelle never closes to form the bregma.
Surgical landmark
The bregma is often used as a reference point for stereotactic surgery of the brain. It may be identified by blunt scraping of the surface of the skull and washing to make the meeting point of the sutures clearer.
Neonatal examination
Examination of an infant includes palpating the anterior fontanelle. It should be flat, soft, and less than 3.5cm across. A sunken fontanelle indicates dehydration, whereas a very tense or bulging anterior fontanelle indicates raised intracranial pressure.
Height assessment
Cranial height is defined as the distance between the bregma and the midpoint of the foramen magnum (the basion). This is strongly linked to more general growth. This can be used to assess the general health of a deceased person as part of an archaeological excavation, giving information on the health of a population.
Etymology
The word "bregma" comes from the Ancient Greek βρέγμα (brégma), meaning the bone directly above the brain.
References
Additional images
File:Slide3ROM.JPG|The bregma, human skull.
References
- (2016). "Imaging in Neurology, Part 1". AMIRSYS.
- (2020). "Atlas of Anatomy". Thieme Medical Publishers.
- (1994). "Methods in Neurosciences". [[Elsevier]].
- (2018). "Handbook of Behavioral Neuroscience". [[Publisher]].
- Carreiro, Jane E.. (2009-01-01). "An Osteopathic Approach to Children". [[Churchill Livingstone]].
- Nikita, Efthymia. (2017-01-01). "Osteoarchaeology - A Guide to the Macroscopic Study of Human Skeletal Remains". [[Academic Press]].
- Liddell & Scott, ''Greek-English Lexicon''
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