Vascular anatomy · USMLE Step 1

A trauma patient has laceration of the artery that runs with the radial nerve in the radial groove. Which artery is likely injured?

  1. Deep brachial artery
  2. Ulnar artery
  3. Superior ulnar collateral artery
  4. Anterior circumflex humeral artery
Show answer and explanation

Correct answer: Deep brachial artery

The deep brachial (profunda brachii) artery accompanies the radial nerve in the radial groove. Injury may compromise posterior arm perfusion.

Difficulty: Medium Question 9 of 20

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