Transverse Costal Facet Of The Thoracic Vertebra In Anterior View

Description

Transverse costal facet (facet costalis processus transversi) occupies the anterolateral aspect of a thoracic transverse process, presented from an anterior viewpoint that keeps the articular surface centered and the transverse process projecting laterally from the vertebral arch. The facet appears as a smooth, nearly circular area, positioned lateral to the pedicle and posterior-lateral to the vertebral body, where it forms the bony partner for the tubercle of a rib. Adjacent contours of the transverse process and the junction with the lamina help orient the viewer to the posterior elements while maintaining the anterior-facing perspective. A small joint, big consequences. This articular surface defines the costotransverse joint found in typical thoracic vertebrae (classically T1 to T10), a joint that guides rib motion during respiration and becomes clinically relevant in costovertebral and costotransverse arthropathy, inflammatory spondyloarthropathies, and traumatic rib-thoracic spine injuries. Pain from costotransverse joint dysfunction is often localized and can mimic pleuritic chest pain, so being able to point to the exact facet on the transverse process matters when teaching exam findings, image-guided injection targets, or surgical anatomy. The isolated bony emphasis and consistent anterior lighting make the margin of the articular cartilage zone easy to distinguish from the roughened nonarticular cortex. Use this illustration in thoracic anatomy and osteology teaching, in spine surgery or pain medicine references discussing costotransverse joint blocks, radiofrequency ablation targets, or posterior thoracic approaches where rib head and tubercle relationships must be anticipated. It also suits radiology education pieces that correlate CT bony windows with costovertebral complex landmarks in the upper chest. Anatomical accuracy verified by SciePro's Medical Advisory Board.