Costochondritis, also known as chest wall pain syndrome, is the inflammation of the cartilage of the rib cage. Chest pain ...

The sternum, or breastbone, is the flat bone where the ribs meet. Sometimes, the joints can pop or crack as a person stretches or moves. A muscle spasm, an injury, costochondritis, and surgery are ...

The first seven sets of ribs are called true ribs. Costal cartilage anchors them to the edge of the sternum, or breastbone, in the middle of the chest at the front of the body. These ribs attach ...