What Is the Axis?
The 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. In chiropractic care, the axis is assessed as part of the upper cervical spine and its relationship to nearby joints and tissues.
Quick Facts About Axis
Category
Cervical vertebra
Used for
Upper-neck movement and stability
Common confusion
Often confused with the atlas
Also called
C2 vertebra, Second cervical vertebra
Often discussed with
Chiropractic Adjustment
Key Takeaways About Axis
- The axis is the second vertebra in the cervical spine.
- Its dens supports rotation between the skull and upper neck.
- The axis is not the same bone as the atlas.
How Axis Works
Axis forms the next level of the upper cervical spine below the atlas. Its dens projects upward into the ring-shaped atlas, creating a pivot that supports head rotation. Ligaments and joint surfaces help hold this connection in place while the neck moves.
Related glossary terms: Atlas, Cervical Spine, Cervical Lordosis.
A chiropractic assessment considers the axis as part of the neck's connected movement system. The clinician may review posture, active range of motion, muscle tension, and joint motion around the upper neck. The findings help distinguish restricted movement from symptoms that may involve other cervical structures, such as the cervical spine or nearby muscles.
From the Arrowhead Clinic Chiropractor Savannah team
When we assess the axis during a chiropractic adjustment, we consider upper-neck motion, posture, and the relationship between the atlas and nearby cervical joints. Our team also checks whether muscle tension or limited movement may affect the area before selecting an appropriate adjustment approach.
Axis in Practice: A Real-World Example
A person with neck stiffness may show reduced rotation during an examination. The clinician can assess motion around the axis and atlas before planning a chiropractic adjustment.
Related Services
Related Terms
Atlas
Atlas is the first cervical vertebra in the neck, located beneath the skull and above the…
Cervical Spine
The cervical spine is the neck section of the vertebral column that supports the head and…
Cervical Lordosis
Cervical Lordosis is the natural inward curve of the neck portion of the spine. This curve…
Range Of Motion
Range Of Motion is the amount and direction a joint can move through its available path…
Arrowhead Clinic Chiropractor Savannah
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