ODONTOID VERTEBRA Meaning and
Definition
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The term "odontoid vertebra" refers to a specific anatomical feature of the cervical spine, particularly the second cervical vertebra, known as the axis. The odontoid process, also called the dens, is a bony projection that extends upward from the body of the axis and sits within the vertebral foramen of the first cervical vertebra, called the atlas. This process resembles a tooth, hence its name "odontoid."
The odontoid vertebra serves a crucial role in supporting the head and enabling its pivotal motion. Its unique structure allows for rotation of the head, which facilitates various activities such as turning the head from side to side.
A disorder or injury affecting the odontoid vertebra can have significant consequences. For instance, a fracture in the odontoid process, often caused by trauma or degenerative conditions, can lead to instability in the cervical spine. This instability can compromise the spinal cord's integrity, resulting in severe neurological complications and even paralysis.
Medical professionals typically diagnose odontoid vertebra-related conditions through imaging techniques like X-rays, CT scans, or MRIs. Treatment options depend on the nature and severity of the condition but may involve immobilization through wearing a specialized collar or halo brace, medication to manage pain and inflammation, or surgical intervention for more severe cases.
In summary, the odontoid vertebra refers to the second cervical vertebra, featuring a tooth-like projection called the odontoid process. This anatomical structure plays a fundamental role in supporting head movements, and any trauma or disorders affecting it can have serious consequences for the cervical spine's stability and neurological function.
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A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for ODONTOID VERTEBRA
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Etymology of ODONTOID VERTEBRA
The word "odontoid" is derived from the Greek words "odon" meaning "tooth" and "eidos" meaning "form" or "shape". The term "vertebra" comes from the Latin word "vertebra" which means "joint" or "bone". Therefore, "odontoid vertebra" essentially refers to a vertebra that resembles a tooth in shape.
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