Thoracic Spine Definition

The thoracic spine is comprised of twelve vertebral bodies (T1-T12) that make up the mid-region of the spine. This section of the spine has a kyphotic curve (C-shape). The firm attachment to the rib cage at each level of the thoracic spine provides stability and structural support and allows very little motion, which means that thoracic disc injuries are rare. However, irritation of the large back and shoulder muscles or joint dysfunction in the upper back can be very painful.