How Do You Spell ARCUS POSTERIOR ATLANTIS?

Pronunciation: [ˈɑːkəs pɒstˈi͡əɹɪəɹ atlˈantɪs] (IPA)

The correct spelling of the word "arcus posterior atlantis" in Latin, commonly referred to as the atlanto-occipital joint, is a tricky one because of its intricate pronunciation. The word is pronounced /ˌɑːkəs pɒsˈtɪəriər əˈtlæntɪs/ in IPA phonetic transcription. "Arcus" means arch or bow; "posterior" means behind or back; and "atlantis" refers to the atlas bone at the top of the spinal column. Understanding the phonetic symbols of each letter helps in mastering the spelling of this complex medical term.

ARCUS POSTERIOR ATLANTIS Meaning and Definition

1. 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.

2. The posterior arch of the atlas.

   A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.

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