Anatomy of the Face - Flipbook - Page 48
Atlanto-Occipital Joint
The atlantooccipital joint (also known as the C0-C1 joint) is a paired symmetrical articulation between the
cervical spine and the base of the skull. Along with the atlantoaxial joint, it makes up a group called the
craniovertebral joints. The atlanto-occipital joints allow for nodding, flexion/extension, or ‘yes’ motions of the
head. The articulations between the atlas and axis (the two lateral atlantoaxial joints and the median
atlantoaxial joint between the dens and the atlas) allow for rotation of the head or ‘no’ motions. The upper
cervical spine region is designed to allow for significant mobility, at the sacrifice of stability. This is why joint stability
in the craniocervical region is maintained mainly by the fibrous capsules, ligaments, articular surfaces and
surrounding muscles.
ATLANTO-OCCIPITAL
JOINT
ATLAS (C1)
ATLANTO-AXIAL
JOINT
AXIS (C2)
OCCIPITAL BONE
ATLAS (C1)
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