Encyclopedia Galactica: Cybernetics
Cyber-technology has advanced to the point that sentients can have limbs replaced by new and better ones. Neural interfaces are used; so that humans may control machines with a thought, or surf the net. They can have trauma packs implanted in their bodies in case of injury or add subdermal armour to resist damage in the first place. The only limits are those imposed by law and nature. However most of the premium equipment is classified for military use, so while it is easy to get a cyberlimb if you happen to lose one of your own, it is somewhat harder to get one of military quality.
