ARCUS POSTERIOR ATLANTIS Meaning and
Definition
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Arcus posterior atlantis is a term used in anatomy and refers to a bony bridge or an abnormal ossification of the posterior arch of the atlas bone, which is the first cervical vertebra of the spine. The atlas bone, also known as C1, supports the skull and forms the joint with the occipital condyles at the base of the skull. It is responsible for allowing the head to move in various directions.
The arcus posterior atlantis is a rare anatomical variant where there is a complete or partial bony bridge that forms between the posterior tubercles of the atlas. This bridge or ossification can occur unilaterally or bilaterally. In cases where there is complete fusion, it can lead to limited movement and reduced flexibility of the neck.
This condition is usually asymptomatic, meaning individuals with arcus posterior atlantis do not experience any pain or discomfort. It is often discovered incidentally during radiographic imaging, such as X-rays or computed tomography (CT) scans, performed for other medical reasons.
While arcus posterior atlantis is generally considered a benign anatomical finding, it is important for healthcare professionals to be aware of its presence. In rare instances, it can be associated with other developmental anomalies of the cervical spine, such as Klippel-Feil syndrome.
Overall, understanding the anatomical variations like arcus posterior atlantis contributes to comprehensive knowledge of the human body and assists healthcare professionals in accurate diagnosis and treatment planning.
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The posterior arch of the atlas.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for ARCUS POSTERIOR ATLANTIS
- arcus po sterior atlantis
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- arcus posterior a tlantis
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- arcus posterior atla ntis
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- arcus posterior atlanti s
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