The vertebral column is a multi-articular, segmented structure that is typically made of up 33 vertebrae along with many ligaments, muscles and intervertebral discs. The structures that form the vertebral column must be rigid enough to support the trunk and the limbs, strong enough to protect the spinal cord and anchor the deep spinal muscles, and yet sufficiently flexible to allow for movement of the head and trunk in multiple directions. The curves of the spine make the structure particularly