Joint of head of rib

Articulations of the Heads of the Ribs (articulationes capitulorum; costocentral articulations) —These constitute a series of gliding or arthrodial joints, and are formed by the articulation of the heads of the typical ribs with the facets on the contiguous margins of the bodies of the thoracic vertebræ and with the intervertebral fibrocartilages between them; the first, tenth, eleventh, and twelfth ribs each articulate with a single vertebra. The ligaments of the joints are:

• The Articular Capsule.
• The Radiate.
• The Interarticular.