Infraclavicular fossa

Infraclavicular fossa is an anatomical region located below the clavicle, also known as the collarbone. It is a shallow depression that is visible when the shoulder is abducted. The infraclavicular fossa is bounded by the clavicle superiorly, the pectoralis major muscle laterally, and the sternocleidomastoid muscle medially.

Anatomy

The infraclavicular fossa is a part of the anterior chest wall. It is a triangular region that is located below the clavicle. The base of the triangle is formed by the lower border of the clavicle, and the apex is at the junction of the sternum and the costal cartilages of the first rib.

The infraclavicular fossa contains several important structures, including the subclavian vein, the subclavian artery, and the brachial plexus. These structures are protected by the clavicle and the overlying muscles and skin.

Clinical significance

Due to the presence of major blood vessels and nerves, the infraclavicular fossa is a common site for medical procedures such as central venous catheterization and nerve blocks. It is also a common site for the placement of pacemakers and implantable cardioverter-defibrillators.

See also

• Clavicle
• Pectoralis major muscle
• Sternocleidomastoid muscle
• Subclavian vein
• Subclavian artery
• Brachial plexus