skip to main content

Diabetic foot infection — USMLE Step 3 MCQ

Instant feedback + full explanation. One question, done properly.

ModerateAmbulatory Medicine / Primary CareDiabetic foot infectionUSMLE Step 3

A 60-year-old man with diabetes has a plantar ulcer under the first metatarsal head. The ulcer probes to soft tissue but not bone and has mild surrounding erythema without systemic signs. Pedal pulses are present and x-ray shows no osteomyelitis. Which of the following is the most appropriate next step in management?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: B — Begin oral antibiotics and offloading with close follow-up

Mild diabetic foot infection requires wound care, offloading, and appropriate oral antibiotics.

Reference: Current US clinical practice standards and USMLE Step 3 content outline, https://www.usmle.org/exam-resources/step-3-materials