Scapuloclavicular Triangle

Scapuloclavicular triangle: structure and functions

The scapuloclavicular triangle, also known as the trigonum omoclaviculare or PNA/JNA, is the area in the upper half of the human body located between the scapula and the collarbone. This triangle is formed by various muscles and bone structures that have important functional properties related to the mobility of the arm and shoulder.

The scapuloclavicular triangle is formed by the scapula, collarbone, and several muscles, including the upper back muscles, neck muscles, and chest muscles. Within the triangle are many important structures, including the subclavian artery, subclavian vein, superior nerve plexus, and lymph nodes. These structures play an important role in blood circulation, nerve innervation, and lymphatic drainage of the upper limb.

The muscles that form the scapuloclavicular triangle are also important for the movement of the arms and shoulders. For example, upper back muscles such as the trapezius and rhomboids help with raising and lowering the arms and shoulder movement. Neck muscles, such as the latissimus dorsi, also play an important role in supporting the shoulder girdle and are involved in arm movement.

Despite the fact that the scapuloclavicular triangle is an important anatomical region, it can also become the site of various pathologies. For example, lymph nodes, tumors, arteriovenous malformations and other diseases can occur here. In addition, injuries to this area can lead to pain and impaired arm movement.

In conclusion, the scapuloclavicular triangle is an important region in the human upper body, which plays an important role in the movement of the arms and shoulder, as well as in the blood circulation, nerve innervation and lymphatic drainage of the upper limb. Understanding the anatomy and function of this area can help in the diagnosis and treatment of various diseases and injuries in this area.

The scapuloclavicular triangle is a muscle triangle formed by the fascia of the subscapularis muscle and the edge of the clavicle. This triangle contains such important vessels and nerves as the subscapular vein, axillary artery and the branch of the radial nerve, the abductor muscles of the thumb and shoulder