"In 2000, British Special Air Service veteran and adventurer, Sir Ranulph Fiennes received severe frostbite on his left hand in a failed solo North Pole expedition. After abandoning the trip and while waiting in England for further medical care, *the pain of the necrotized tissue became unbearable. Fiennes retired to his garden shed and amputated his own digits with a power saw after clamping them in a vise. He survived and went on to other expeditions, including summitting Mount Everest and an abandoned Antarctic traverse."
Apparently it's quite a thing. Who would have thought?
* "socialized" healthcare