Which statement best describes thoracic facet orientation and motion?

Which statement best describes thoracic facet orientation and motion?

• A. The orientation permits rotation along with flexion and extension
• B. The orientation restricts rotation and permits flexion only
• C. Circumduction is the primary motion
• D. The orientation prevents any flexion

Answer: (D)

The thoracic facet joints are oriented in a way that directs motion toward rotation while still allowing limited flexion and extension. This arrangement, paired with the rib cage, resists large bending forward or backward but does not stop rotation, which is a key feature of the thoracic region. So the statement that best fits is that the orientation permits rotation and also allows some degree of flexion and extension. The idea that circumduction is the main motion is incorrect, that rotation is restricted, or that flexion is completely prevented do not match how these joints actually move in the thoracic spine.

The thoracic facet joints are oriented in a way that directs motion toward rotation while still allowing limited flexion and extension. This arrangement, paired with the rib cage, resists large bending forward or backward but does not stop rotation, which is a key feature of the thoracic region. So the statement that best fits is that the orientation permits rotation and also allows some degree of flexion and extension. The idea that circumduction is the main motion is incorrect, that rotation is restricted, or that flexion is completely prevented do not match how these joints actually move in the thoracic spine.