Sternocostal

Sternocostal refers to the anatomical relationship between the sternum and the costae, or ribs. It is often used to describe certain joints, surfaces, and angles in the human body.

Anatomy

The sternocostal joints are the articulations connecting the sternum and the costae, or ribs. These joints are of two types: the first sternocostal joint, which is a synchondrosis, and the other sternocostal joints, which are synovial joints.

First Sternocostal Joint

The first sternocostal joint is the joint between the first rib and the manubrium of the sternum. It is a synchondrosis, a type of cartilaginous joint where the bones are joined by hyaline cartilage. This joint allows very little movement.

Other Sternocostal Joints

The other sternocostal joints are the joints between the second to seventh ribs and the sternum. These are synovial joints, specifically plane joints, which allow gliding movements. The ribs are connected to the sternum by costal cartilages, which are bars of hyaline cartilage.

Clinical Significance

Injuries or conditions affecting the sternocostal joints can cause chest pain and difficulty breathing. These conditions include costochondritis, inflammation of the costal cartilage, and Tietze syndrome, a rare inflammatory disorder characterized by chest pain and swelling of the costal cartilages.

See Also

• Costochondral
• Costovertebral joint
• Intercostal space
• Rib cage

References

Sternocostal Resources
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