Osteomyelitis in a Diabetic Patient . A 60-year-old man with a history of poorly controlled diabetes presents with a non-healing ulcer on his right foot for the past month. The ulcer is deep, and the surrounding skin is erythematous and swollen. Laboratory findings show an elevated white blood cell count and ESR. Imaging reveals osteomyelitis involving the first metatarsal. What is the most likely causative organism(s)?
