What term describes the creation of replacements for human body parts?

The term that best describes the creation of replacements for human body parts is bionics. Bionics specifically refers to the integration of biological systems with electronic systems, which often includes the design and use of artificial body parts that can interact with the human body's nervous system and enhance or replace lost functions. This field combines principles from biology and engineering to create devices that mimic or enhance biological functions, making it a fitting term for describing advanced prosthetic limbs or organ replacements that utilize artificial components.

While prosthetics is closely related to the topic as it refers to artificial devices designed to replace missing body parts specifically, the term bionics encompasses a broader technological approach that includes the incorporation of electronics and enhanced functionalities, such as movement and sensory feedback, which prosthetics alone may not fully convey. This distinction highlights why bionics is the most accurate term in the context of creating sophisticated replacements for human body parts that go beyond mere substitution to include functional enhancement.