Corpus: Subscapular artery

The subscapular artery is the largest branch of the axillary artery. It originates in the distal third of the vessel on the posterior wall of the axillary fossa and descends along the lateral border of the subscapularis muscle. After a relatively short course of 4-5 cm, the vessel divides into two terminal branches, with one continuing caudally and the other forming a curved cranial trajectory. The subscapular artery is occasionally accompanied in its course by the corresponding subscapular vein.

• Circumflex scapular artery
• Thoracodorsal artery

The subscapular artery supplies numerous muscles in the shoulder region through its terminal branches, including:

• Triceps brachii muscle (long head)
• Deltoid muscle
• Subscapularis muscle
• Latissimus dorsi muscle
• Teres major muscle
• Teres minor muscle
• Infraspinatus muscle
• Serratus anterior muscle