Odontoid process
Odontoid Process
The Odontoid Process (pronunciation: /oʊˈdɒntɔɪd ˈprɒsɛs/), also known as the dens, is a bony protrusion found in the axis, the second cervical vertebra of the spine. The term "odontoid" comes from the Greek words "odous" meaning tooth and "eidos" meaning form or shape, referring to the tooth-like shape of the process.
Structure
The odontoid process is a strong, tooth-like projection that extends upward from the body of the axis. It is held in place by the transverse ligament of the atlas, allowing for rotation of the head.
Function
The primary function of the odontoid process is to provide a pivot point for the atlas, the first cervical vertebra, allowing for rotation of the head. It also serves to stabilize the atlas and protect the spinal cord.
Clinical Significance
Damage or fracture to the odontoid process can lead to instability of the cervical spine and potential damage to the spinal cord. Conditions such as rheumatoid arthritis can also affect the odontoid process, leading to instability and potential neurological complications.
Related Terms
- Axis
- Vertebrae
- Spinal column
- Transverse ligament of the atlas
- Atlas
- Spinal cord
- Rheumatoid arthritis
External links
- Medical encyclopedia article on Odontoid process
- Wikipedia's article - Odontoid process
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