I dont think I could handle having a limb with gangrene, I find it cool to look at but it'd be way to gross for me to handle having, id probably do what Dogleg said and self amputate if I couldnt get doctors to do it!
Wow! Without knowing the person's history or anything about their family or who cared for them ..... how does someone not get help for that?! (The gangrene hand)