"Pal et al., performed an anatomic study

“Pal et al., performed an anatomic study to look at the orientation of the superior articular facets in relation to their inclination in the sagittal and transverse planes. They found that all vertebrae at C3 level displayed posteromedially facing superior articular facets. As you moved caudally, the orientation transitions to posterolaterally facing superior articular facets. The level of change in orientation, from posteromedial to posterolateral facing superior facets, was not constant and occurred anywhere between C4 (C3/C4 joint) and T1 (C7/T1 joint).”