Vascular anatomy · USMLE Step 1

A bullet injury damages the artery supplying the head of the femur in an adult. Which artery is most affected?

  1. Medial circumflex femoral artery
  2. Lateral circumflex femoral artery
  3. Obturator artery
  4. Inferior gluteal artery
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Correct answer: Medial circumflex femoral artery

The medial circumflex femoral artery provides the primary blood supply to the femoral head in adults. Injury can lead to avascular necrosis.

Difficulty: Medium Question 4 of 20

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