This is gangrene of the lower extremity. In this case the term "wet" gangrene is more applicable because of the liquefactive component from superimposed infection in addition to the coagulative necrosis from loss of blood supply. This patient had diabetes mellitus with severe peripheral vascular disease.

Diabetic foot ulcers represent a serious complication. Persons with such an ulcer have more than double the risk for death in 5 years than persons without them, because half of these ulcers develop an infection that is hard to treat due to of poor circulation and reduced tissue viability. One in 5 severe foot