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Also known as prosthetics, prostheses, Prostheses and Implants, prosthetic device, prosthetic implant

thumb|A person with a running prosthesis In medicine, a prosthesis (: prostheses; from ), or a prosthetic implant, is an artificial device that replaces a missing body part, which may be lost through physical trauma, disease, or a condition present at birth (congenital disorder). Prostheses may restore the normal functions of the missing body part, or may perform a cosmetic function.