Transverse Process Of The Thoracic Vertebra, Lateral View

Description

Thoracic transverse process projects posterolaterally from the junction of pedicle and lamina in a lateral view of a typical thoracic vertebra. Near its distal rounded end, the transverse costal facet (facet for tubercle of rib) forms a small articular surface oriented anterolaterally, positioned lateral to the vertebral canal and posterior to the vertebral body. Superior and inferior to the process, the superior and inferior articular processes can be appreciated as stacked projections that bracket the zygapophysial joint region, while the rib’s tubercle is implied at the point of costotransverse contact. Bony landmarks dominate the frame. Costotransverse anatomy matters whenever rib mechanics and thoracic spine pain intersect, because the tubercle of rib articulation can be a generator of focal posterior chest wall pain in costotransverse joint osteoarthritis, inflammatory spondyloarthropathy, or post-traumatic irritation after rib fracture. The fixed lateral perspective makes the spatial relationship between the transverse process and the rib attachment site immediately legible, a point that can get lost when learners focus only on the vertebral body and costal facets on the body. For procedural teaching, the transverse process is also a practical landmark for thoracic paravertebral block and erector spinae plane block planning, where needle endpoints are discussed relative to transverse process depth and the nearby pleura. Precision matters. Use this illustration in thoracic osteology labs, radiographic anatomy discussions that correlate CT bony windows with surface landmarks, and figure plates for textbooks covering costovertebral and costotransverse joints. It also suits surgical education materials that reference thoracic pedicle screw trajectories and the proximity of transverse process morphology to rib head and tubercle orientation. Anatomical accuracy verified by SciePro's Medical Advisory Board.