Lateral Perspective of the T3 or Third Thoracic Vertebra

Description

Positioned in lateral profile, the third thoracic vertebra (T3) is presented with its vertebral body anterior and the vertebral arch posterior, framing the vertebral foramen between them. The transverse process projects posterolaterally and carries the transverse costal facet (facet for the tubercle of rib) for articulation with the tubercle of the third rib, while the superior and inferior articular processes define the zygapophysial joints above and below. The spinous process angles posteriorly and inferiorly, consistent with mid thoracic morphology. A clear rib landmark. Segmental identification of T3 matters when you are teaching costovertebral mechanics, because the rib head meets the superior and inferior costal facets on adjacent vertebral bodies while the rib tubercle locks onto the transverse costal facet at the same level, creating a coupled joint that drives thoracic rotation and influences ventilation. This is the level where clinicians often localize upper thoracic pain from costotransverse joint dysfunction, and where precision helps in planning fluoroscopy guided costotransverse injections or interpreting fractures that may extend into the transverse process and disrupt rib articulation. Use this lateral T3 vertebra view in gross anatomy labs, spine and thorax modules, and radiology teaching files that correlate osseous landmarks with CT bone windows and plain film obliques. It also suits surgical education on posterior thoracic approaches, where transverse process anatomy guides safe dissection around the costotransverse complex. Anatomical accuracy verified by SciePro's Medical Advisory Board.