Thoracic Spine

Description

Running from T1 inferior to C7 down to T12 superior to L1, the thoracic spine is presented as a stacked series of vertebral bodies separated by intervertebral discs, with pedicles and laminae forming the vertebral arch posteriorly around the vertebral canal. Spinous processes project posteriorly and overlap in the mid-thoracic levels, while transverse processes extend laterally from the junction of pedicle and lamina. A gentle thoracic kyphosis is evident, placing the vertebral bodies relatively anterior to the posterior elements and giving the segment its characteristic curvature. Blue disc material contrasts with the bony vertebrae. Restricted motion is the teaching point here. The thoracic zygapophysial (facet) joints tend to align in a more coronal plane than the cervical or lumbar spine, a geometry that favors rotation over flexion and extension, and the long, inferiorly angled spinous processes further limit extension in the midline. Rib articulations also belong to this story: costovertebral and costotransverse joints, anchored by radiate and costotransverse ligaments, couple the thoracic vertebrae to the rib cage and help explain why thoracic disc herniation and thoracic radiculopathy behave differently from lumbar disease, and why thoracic compression fractures often produce kyphotic wedge deformity. Use this asset for gross anatomy and biomechanics teaching on vertebral morphology, for spine and pain medicine materials discussing thoracic facet-mediated pain or radicular patterns, and for orthopedic, neurosurgical, or radiology publications that need a clear reference for T1 to T12 levels and disc spacing in a male model. Anatomical accuracy verified by SciePro's Medical Advisory Board.