What Is Axis?
Axis is the second cervical vertebra in the neck. It sits below the atlas and has a tooth-like projection called the dens. The dens fits into the atlas and helps the head rotate. Clinicians assess the axis as part of the cervical spine when reviewing neck movement, alignment, and related symptoms.
Quick Facts About Axis
Category
Cervical vertebra
Used for
Neck movement and rotation
Common confusion
Confused with the atlas
Also called
C2 Vertebra, Second Cervical Vertebra
Often discussed with
Neck Pain Treatment
Key Takeaways About Axis
- The axis is the second cervical vertebra.
- Its dens supports rotation between the atlas and skull.
- The axis is not the atlas or the entire cervical spine.
How Axis Works
The axis is built around the dens, a raised part of the vertebra that projects upward into the atlas. The atlas rotates around this projection, allowing the head and upper neck to turn from side to side. Ligaments help hold this relationship together while the neck moves.
Related glossary terms: Atlas, Cervical Spine, Range Of Motion.
A clinician considers the axis alongside the atlas and the rest of the cervical spine during a neck assessment. The examination may include active range of motion, posture, tenderness, and neurological findings. These observations help place neck pain or restricted movement in the context of the upper cervical joints.
From the Arrowhead Clinic Chiropractic - Albany team
When we assess neck pain, we consider the axis as part of the upper cervical region. We review neck movement and related findings together, since discomfort near the axis may involve nearby joints, muscles, or nerves. Our team uses that context when planning care for neck pain.
Axis in Practice: A Real-World Example
A person with neck pain may have difficulty turning the head while checking traffic or looking over a shoulder. During an assessment, the clinician reviews upper-neck movement and the relationship between the axis and atlas.
Related Services
Related Terms
Atlas
Atlas is the first cervical vertebra at the top of the spinal column, directly beneath the…
Cervical Spine
Cervical Spine is the upper section of the spinal column in the neck. It supports the…
Range Of Motion
Range Of Motion is the amount and direction a joint can move through its available movement…
Neurological Exam
A neurological exam is a clinical assessment of the nervous system. It checks functions such as…
Arrowhead Clinic Chiropractic - Albany
Have Questions About Axis?
Contact Arrowhead Clinic Chiropractic - Albany for practical guidance on Axis and related chiropractor work in Albany.