A 70-year-old man is evaluated in the office due to right arm pain after a fall from a height. The patient is known to have hypertension. On examination, there is bruising over the right shoulder. The movement of the right arm is restricted due to the pain. Radiological imaging shows a right humeral fracture at the anatomical neck. The patient is most likely at risk for which of the following injuries?

Question

Quizplus · Accepted Answer

Eductional Objective: Avascular necrosis of the humeral head results from humeral neck fractures. This could be explained due to the nature of the blood supply of this region, as the proximal part of the humerus and the glenohumeral joint receive blood supply from the anterior and posterior circumflex arteries. Circumflex arteries branch from the axillary artery forming anastomosis around the humeral neck.

A 70-Year-Old Man Is Evaluated in the Office Due to Right