Vascular anatomy · USMLE Step 1

A patient sustains a fracture of the surgical neck of the humerus. Which artery is at greatest risk?

  1. Anterior circumflex humeral artery
  2. Posterior circumflex humeral artery
  3. Deep brachial artery
  4. Radial artery
Show answer and explanation

Correct answer: Posterior circumflex humeral artery

The posterior circumflex humeral artery travels with the axillary nerve around the surgical neck of the humerus. This makes it vulnerable to fracture-related injury.

Difficulty: Medium Question 12 of 20

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