AMPUTATIONS/PARALYSIS

Amputation is defined as removal by surgery of an external body part, usually all or part of a limb. Amputation may be required when a limb has been severely crushed or when blood circulation is impaired. 
Other conditions which could lead to amputation include infection, frostbite, burns, or arteriosclerosis.
Even though a body part has been removed, some amputees report the feeling of painful sensations from the removed part. This condition is called phantom-limb pain.