| abstract | - "Automail" is the common term for automotive armored prostheses as used in the Fullmetal Alchemist universe. Originally devised as a sort of motorized battle armor (according to the "Alchemists vs. Homunculi" OVA), automail eventually became advanced enough to double as prosthetic body parts for amputees desiring something more versatile than normal prosthetic limbs. Linked directly to the nervous system, an automail prosthesis does not usually require an external energy source, and can be moved at will like a natural appendage, taking electrical pulses from the nerves to power and regulate the various electric motors and pneumatic actuators inside. Automail limbs are generally made with a full steel skeletal frame layered with steel armor-plating to protect the various wires and intricate machinery inside; however, contemporary technological advancements have allowed certain automails to be comprised of other materials such as carbon fiber, fiberglass, chrome, copper-nickel and aluminum alloys, so as to be less cumbersome and more durable than steel in abnormal conditions.
- Automail, or prostheses, are artificial technologies designed to replace a lost limb or restore some functionality the limb served. All types of artificial body parts fall under the umbrella of automail regardless of their complexity, and complexity can range from a simple wooden peg leg to a complex intrusive automail arm system.
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