Evaluation and Management of Proximal Humerus Fractures
Figure 3
The anterior humeral circumflex is seen adherent to the proximal humerus (a), whereas the posterior humeral circumflex artery (PCA) seen in (b) is less adherent with several perforating branches along its course, making this vessel less vulnerable to injury in the case of proximal humerus fracture. (Reprinted with permission from Hettrich [10]).
