An amputation is the removal of a part of the body that is covered by skin (not an internal organ). Common amputations include arm, leg, foot, and hand amputations. An amputation may be done because of injury, frostbite, gangrene, and more. Where the limb is cut will depend on how severe the problem is and how well a prosthetic limb will fit. Some amputations are accidental -- they may occur in a car accident, due to an animal bite, or due to other trauma. Follow the links below to find WebMD's comprehensive coverage about amputations, why they occur, how to prevent them, what to expect from an amputation, and more.