The suprascapular artery (SSA) supplies the scapular region and also gives off branches to the ipsilateral regions of the chest and shoulder. Still, most of its content is delivered to the posterior surface of the scapula and nearby tissues (Figs. 87.1 and 87.2). Its role in collateral circulation confers broad clinical significance on it. Furthermore, the SSA, which travels closely with the suprascapular nerve, is associated with two important anatomical landmarks along its course to the scapula: the superior transverse scapular ligament and the spinoglenoid notch. Knowledge of these associations, especially its relationship to the suprascapular nerve, has critical applications in surgery.