Rat bite ulcer in an insensate foot

A 60-year-old man, a known case of type 2 diabetes mellitus for the past 20 years noticed sudden development of an ulcer on the plantar aspect of both great toes on waking up in the morning. The patient had examined his feet the previous night and it was free from any fissures, callosities or ulcers. There was no previous history of diabetic foot ulcer. The ulcer on right great toe was 3×2 cm, …