Sternocostal joints
Encyclopedia
The sternocostal articulations (costosternal articulations), articulations of the cartilage
s of the true rib
s with the sternum are arthrodial joints, with the exception of the first, in which the cartilage is directly united with the sternum, and which is, therefore, a synarthrodial articulation. The ligaments connecting them are:
Cartilage
Cartilage is a flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between bones, the rib cage, the ear, the nose, the elbow, the knee, the ankle, the bronchial tubes and the intervertebral discs...
s of the true rib
Rib
In vertebrate anatomy, ribs are the long curved bones which form the rib cage. In most vertebrates, ribs surround the chest, enabling the lungs to expand and thus facilitate breathing by expanding the chest cavity. They serve to protect the lungs, heart, and other internal organs of the thorax...
s with the sternum are arthrodial joints, with the exception of the first, in which the cartilage is directly united with the sternum, and which is, therefore, a synarthrodial articulation. The ligaments connecting them are:
- Articular capsules
- Interarticular sternocostal ligamentInterarticular sternocostal ligamentThe Interarticular sternocostal ligament is a horizontal fibrocartilaginous plate in the center of the second sternocostal joint. It connects the tip of the costal cartilage to the fibrous junction between the manubrium and the body of the sternum, dividing the joint into two parts....
- Radiate sternocostal ligamentsRadiate sternocostal ligamentsThe Radiate sternocostal ligaments are fibrous bands that cross from the sternal end of the costal cartilage to the ventral part of the sternum....
- Costoxiphoid ligamentsCostoxiphoid ligamentsThe Costoxiphoid Ligaments connect the anterior and posterior surfaces of the seventh costal cartilage, and sometimes those of the sixth, to the front and back of the xiphoid process....