Rotation in many spinal segments occurs around which axis?

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Multiple Choice

Rotation in many spinal segments occurs around which axis?

Explanation:
Rotation of the spine is best thought of as twisting around a vertical axis that runs top to bottom. This vertical (superoinferior) axis allows the trunk to rotate left or right, with the motion occurring in the transverse plane. By contrast, lateral bending (side-to-side) uses an axis that runs front-to-back, and flexion/extension uses an axis that runs side-to-side. So the spine’s rotational movements are primarily around the vertical axis, which is why that axis is the most accurate descriptor for rotation in many spinal segments.

Rotation of the spine is best thought of as twisting around a vertical axis that runs top to bottom. This vertical (superoinferior) axis allows the trunk to rotate left or right, with the motion occurring in the transverse plane. By contrast, lateral bending (side-to-side) uses an axis that runs front-to-back, and flexion/extension uses an axis that runs side-to-side. So the spine’s rotational movements are primarily around the vertical axis, which is why that axis is the most accurate descriptor for rotation in many spinal segments.

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