Gangrene, can any part of your body heal if there is gangrene or does amputation always follow?

Answer 1

It can be treated, though not healed, and doesn't always result in amputation.

More info:
http://www.nlm.nih.gov/medlineplus/ency/article/007218.htm#Treatment

Answer 2

If a part of your body is gangrenous, it MUST be removed because it will spread quickly. Gangrene is dead, rotting tissue. It cannot heal. They can try to limit how much they have to remove by getting to it fast to prevent it from spreading.