Lateral Costotransverse Ligaments, Posterior View

Description

Posterior thoracic anatomy is centered on the thoracic vertebrae with paired ribs radiating laterally from the transverse processes. At each costotransverse joint, the lateral costotransverse ligament forms a firm band running from the nonarticular part of the rib tubercle toward the tip of the corresponding transverse process, positioned lateral to the intertransverse region and deep to the intrinsic back musculature. Intercostal muscles occupy the intercostal spaces laterally, while costal cartilages are visible anteriorly as blue continuations of the bony ribs. Dense fibers, clearly oriented. These ligaments matter because they constrain gliding and rotation at the costotransverse articulation, shaping thoracic wall mechanics during respiration and trunk rotation. Posterior approaches to the thoracic spine, costotransversectomy, and rib head or pedicle exposure all require a clear mental model of the rib tubercle, transverse process, and the ligamentous envelope that must be divided or retracted without losing orientation. Rib dysfunction and thoracic pain syndromes are often discussed in relation to costovertebral and costotransverse joint irritation, where ligament tension becomes a practical teaching point. Use this artwork in gross anatomy labs and thoracic wall lectures to anchor the distinction between costovertebral and costotransverse joints and to explain why posterior rib motion couples with vertebral motion. It also fits spine surgery texts and procedural guides describing posterior thoracic exposure, including segmental anatomy from approximately T1 to T7 in a male. Anatomical accuracy verified by SciePro's Medical Advisory Board.