Description
The superior articular facets are the smooth, flat, superolaterally facing articular areas on the superior articular processes of the axis (second cervical vertebra). They articulate with the corresponding inferior articular facets of the atlas, forming the lateral atlantoaxial joints.
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Facet Joint
The cervical facet joint or zygapophysial joint (Z-joint) is a diarthrodial, synovial joint formed by the superior articular pillar of the inferior vertebral segment and the inferior articular pillar of the superior vertebral segment.
