1. The second one, called the acromial artery, ran deep to the anterior part of the deltoid muscle, near the clavicle and the acromion. The posterior circumflex humeral artery was the most important artery. It supplied the posterior and middle parts of the deltoid muscle.

Nous pouvons diviser le lambeau en trois régions vasculaires correspondant aux trois pédicules artériels: aa. thoraco-acromiale, circonflexes humérales antérieure et postérieure.