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 ...

along with their costal cartilages and the sternum. Each rib is made up of a few different components: the head, the neck, the tubercle, the angle, and the body. Inflammation of the cartilage ...

Most people have 24 ribs, with 12 on each side of the body. No evidence indicates any difference between males and females. The ribs and rib cage are excellent examples of the human body’s ...