In Azuela & Vaughn there are two schools of enhancement, nano-technology (nanites), and cybernetic technology. Those that go the cyborg route are willing to  augment their bodies with mechanical parts (sometimes permanently).  Examples in the book include miners who have been fitted with limps with interchangeable attachments for drilling, scanning, collecting ore. Military personnel fitted with wings for aerial recon.

Real World: A cyborg, short for “cybernetic organism”, is a being with both biological and artificial (e.g. electronic, mechanical or robotic) parts. The term was coined in 1960 when Manfred Clynes and Nathan S. Kline used it in an article about the advantages of self-regulating human-machine systems in outer space.[1] D. S. Halacy’sCyborg: Evolution of the Superman in 1965 featured an introduction which spoke of a “new frontier” that was “not merely space, but more profoundly the relationship between ‘inner space’ to ‘outer space’ – a bridge…between mind and matter.” ( D. S. Halacy, Cyborg: Evolution of the Superman (New York: Harper and Row Publishers, 1965), 7.)

Cybernetic devices have been used to replace damaged organs and limbs, enhance hearing and sight. With the advancements in computer technology these replacement parts are becoming smarter and more user friendly.( , Aug. 2. 2012)