sternocostal articulation

sternocostal articulation

[-kos′təl]
Etymology: Gk, sternon + L, costa, rib
the gliding articulation of the cartilage of each true rib and the sternum, except the articulation of the first rib, in which the cartilage is directly united with the sternum to form a synchondrosis. Each sternocostal articulation also involves five ligaments.