ribtransverse

Ribtransverse is an informal or descriptive term for the costotransverse articulation, the joint between the tubercle of a rib and the transverse process of the corresponding thoracic vertebra. This articulation is part of the thoracic costovertebral system and, for most ribs, forms at the level of the same-numbered vertebra.

Anatomy and articulation

The costotransverse joint is a synovial joint located at the rib tubercle where it contacts the transverse process of the adjacent vertebra. Typically, ribs 2 through 9 form a costotransverse joint with the transverse process of the same-numbered vertebra. The joint capsule surrounds the articulation and contributes to its stability.

Ligaments and support

The costotransverse joint is supported by several ligaments, including elements commonly described as the superior costotransverse ligament and the lateral costotransverse ligament, among others. These ligaments help limit excessive movement while allowing the small gliding motions necessary for respiration.

Function

The costotransverse ribtransverse articulation permits subtle gliding movements of the rib relative to the vertebra during breathing. This mobility aids thoracic cage expansion and contraction, contributing to efficient respiration and stabilization of the rib cage.

Clinical relevance

Problems at the ribtransverse articulation can cause chest wall pain or thoracic spine–related discomfort. Costotransverse arthropathy or costotransverse joint dysfunction is considered in differential diagnoses of chest, back, or flank pain. Imaging (such as CT or MRI) may be used to assess joint alignment, degenerative changes, or acute injury. Treatment is typically conservative, including pain management and physical therapy, with surgical intervention reserved for select cases.