Watching Everest documentaries, why is amputation the only cure for severe frost bite?

Question

I would think the body would heal when it gets warm or medical technology is advanced enough to allow some healing.

In: Biology

Answer 1

When cells of the body are frozen, the crystaline structure tears up the cell walls and organelles. When it thaws out, it’s a wreck. Kind of like how you can thaw out frozen vegetables, but they’ll never be crispy again.