NEAL GRUNDY / SCIENCE PHOTO LIBRARY NEAL GRUNDY / SCIENCE PHOTO LIBRARY
Prostheses. Conceptual computer illustration of a man's body (left) and an assortment of theoretical artificial implants (prostheses, right). The major organs and blood vessels of the body are also seen. The prostheses are (from top): cogs and electronic circuitry in place of the brain; artificial heart and lungs; artificial knee joint and pins to stabilise a fracture in the bones of the lower leg; and an implant in the foot to measure distance walked.
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