In which directions do the superior articular facets of thoracic vertebrae face?

In which directions do the superior articular facets of thoracic vertebrae face?

• A. Posterior, superior, lateral
• B. Anterior, inferior, medial
• C. Superior, anterior, medial
• D. Posterior, inferior, medial

Answer: (A)

The key idea is how the superior articular facets in the thoracic spine are oriented relative to the vertebral body. These facets are not aimed forward; they are directed toward the back of the spine and toward the midline, with a slight upward (superior) tilt. This posteromedial orientation forms the facet joints (zygapophysial joints) with the vertebra above and is what allows the thoracic region to rotate more than the lumbar, while still limiting excessive flexion. So, the best choice is the one that describes a posterior direction first and acknowledges the upward tilt that comes with their orientation. The other directions describe surfaces facing forward or downward, which isn’t how the thoracic superior facets sit.

The key idea is how the superior articular facets in the thoracic spine are oriented relative to the vertebral body. These facets are not aimed forward; they are directed toward the back of the spine and toward the midline, with a slight upward (superior) tilt. This posteromedial orientation forms the facet joints (zygapophysial joints) with the vertebra above and is what allows the thoracic region to rotate more than the lumbar, while still limiting excessive flexion.

So, the best choice is the one that describes a posterior direction first and acknowledges the upward tilt that comes with their orientation. The other directions describe surfaces facing forward or downward, which isn’t how the thoracic superior facets sit.