What constitutes a spinal motion segment?

A. A disc and the facet joints at that level.

B. A disc and the vertebrae above and below, including their interlocking facet joints.

C. A section of the spine involved in a physiological curve with the similar function (i.e. thoracic kyphosis).

D. A vertebral body and the disc above.

Correct Answer: A disc and the vertebrae above and below, including their interlocking facet joints.

Description: Ans. B. A disc and the vertebrae above and below, including their interlocking facet joints.A spinal motion segment is made up of a disc with its adjacent vertebrae and their interlocking facet joints devoid of musculature

Category: Orthopaedics

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