The scapular anastomosis is a system connecting certain subclavian artery and their corresponding axillary artery, forming a circulatory anastomosis around the scapula.

It allows blood to flow past the joint in case of occlusion, damage, or pinching of the following scapular arteries: The transverse cervical artery gives off a branch, the dorsal scapular artery, which accompanies the dorsal scapular nerve and runs down the vertebral border of the scapula to its medial edge and inferior angle.

This suprascapular artery crosses over the suprascapular ligament, passes through the supraspinous fossa and turns around the lateral border of the spine of the scapula and supplies the infraspinous fossa as far as the inferior angle.

The subscapular artery branches from the third part of the axillary and supplies the subscapularis muscle in the subscapular fossa as far as the inferior angle.

The subscapular artery gives off a circumflex scapular branch that enters the infraspinous fossa on the dorsal surface of the bone, grooving the axillary border.