Most people know that amputation is the cutting off of a limb or body part.
It can be accidental or on purpose. Often when a limb is accidentally cut off, like from a factory, farm, or power tool, or from motor vehicles, it can be reattached with a new process called microsurgery. During this surgery , nerves , tendons, and blood vessels are tied together and the limb can recover. But when a limb is diseased as in the case of gangrene, cancer or arteosclerosis, or, it has been too severely damaged in cases of frostbite and burns, then a prosthetic device must be used. Sometimes, amputees continue to feel pain from where the former limb was.