Bone
Axis (C2)
Second cervical vertebra
High-yield
The dens is the pivot for the 'no' movement; a hangman's fracture involves its pars interarticularis.
Overview
The second cervical vertebra whose dens (odontoid process) forms a pivot for the atlas, allowing the 'no' rotation of the head.
Reference facts
- Bone type
- Irregular (vertebra)
- Key landmarks
- Dens (odontoid process); Bifid spinous process; Superior articular facets
- Articulations
- Atlas (atlanto-axial joint); C3 vertebra
Frequently asked questions
What type of bone is the axis (C2)?
The axis (C2) is an irregular (vertebra) bone.
What does the axis (C2) articulate with?
The axis (C2) articulates with the atlas (atlanto-axial joint); C3 vertebra.
What are the key landmarks of the axis (C2)?
Key landmarks of the axis (C2) include the dens (odontoid process); Bifid spinous process; Superior articular facets.