In spinal assessment, which axis is most associated with vertebral rotation?

In spinal assessment, which axis is most associated with vertebral rotation?

• A. Horizontal axis
• B. Vertical axis
• C. Anteroposterior axis
• D. Diagonal axis

Answer: (B)

Vertebral rotation happens around a vertical axis that runs top to bottom through the spine. When you twist your torso, each vertebra pivots around this cranial–caudal line, producing rotation relative to adjacent segments. In spinal assessment, rotation is described with respect to the vertical axis, while other motions map to different axes: flexion/extension relates to a horizontal axis, and lateral bending relates to an axis that runs front-to-back. A diagonal axis isn’t used as a primary descriptor for spinal rotation.

Vertebral rotation happens around a vertical axis that runs top to bottom through the spine. When you twist your torso, each vertebra pivots around this cranial–caudal line, producing rotation relative to adjacent segments. In spinal assessment, rotation is described with respect to the vertical axis, while other motions map to different axes: flexion/extension relates to a horizontal axis, and lateral bending relates to an axis that runs front-to-back. A diagonal axis isn’t used as a primary descriptor for spinal rotation.