Xiphisternal joint

Xiphisternal Joint

The Xiphisternal Joint is a cartilaginous joint where the xiphoid process of the sternum connects with the body of the sternum. This joint is also known as the xiphisternal synchondrosis.

Etymology

The term "xiphisternal" is derived from the Greek words "xiphos" meaning sword and "sternon" meaning chest. The xiphoid process was so named because of its sword-like shape.

Anatomy

The xiphisternal joint is located at the inferior end of the sternum, where the xiphoid process meets the body of the sternum. It is a secondary cartilaginous joint, also known as a synchondrosis. This type of joint is characterized by its ability to allow slight movement between the bones it connects.

Development

In early life, the xiphisternal joint is a synchondrosis, allowing for some movement. However, as a person ages, the joint often becomes an ossified synostosis, meaning it becomes a rigid, immovable joint. This ossification typically occurs around the age of 40.

Clinical Significance

The xiphisternal joint serves as an important landmark in clinical examinations. It is used to measure the diaphragmatic level and to assess the size of the liver during physical examinations. It is also used as a reference point in procedures such as pericardiocentesis, a procedure to remove fluid from the sac around the heart.

Related Terms

• Xiphoid process
• Sternum
• Cartilaginous joint
• Synchondrosis
• Synostosis
• Ossification
• Diaphragm (anatomy)
• Pericardiocentesis

Xiphisternal joint Resources
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