Costal facet
A costal facet is a site of connection between a rib and a vertebra. The costal facets are located on the vertebrae that the rib articulates with. They are the superior costal facet, the inferior costal facet, and the transverse costal facet.[1] Rib 1 only articulates with a transverse costal facet. A transverse costal facet is a facet on the transverse process of the vertebrae for articulation with the tubercle on the rib.
The superior costal facet joins the rib to the top of a vertebra. The transverse costal facet joins the rib to the transverse process of a vertebra, and the inferior costal facet joins the rib to the lower part of the vertebra. The joints formed are known as the costovertebral joints.
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