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ModerateInfectious DiseasesDiabetic Foot Osteomyelitisus-abfmus-abimus-usmle-step-2

A 60-year-old man with diabetes and peripheral vascular disease presents with a chronic foot ulcer over the first metatarsal head. The ulcer probes to bone, and X-ray shows cortical erosion. He is afebrile. What is the most likely diagnosis?

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