A replaceable amputee arm is generally called a prosthetic arm or upper limb prosthesis. It’s the artificial device used to replace part or all of a missing arm.

Common terms

  • Prosthetic arm : the everyday term.
  • Upper limb prosthesis : the more formal medical term.
  • Artificial limb : a broader term that can refer to arms or legs.

Types you may hear

  • Passive prosthetic : mainly cosmetic, with limited movement.
  • Body-powered prosthetic : controlled with cables and body movement.
  • Myoelectric prosthetic : uses muscle signals to control the arm.

Simple wording

If you want the shortest answer: prosthetic arm.