Bionic prosthetic

A bionic prosthetic is an bio-electronic implant designed to emulate and/or replace the function of the damaged/destroyed organ or limb. Some species (such as the Borg) made use of bio-electric devices to assist, specialize in a certain area, or completely replace an organ or limb whether it was damaged or not.

Characters
Below is a listing of characters in the Star Trek universe that have made use of bionic prosthetics.

Major characters:
 * Geordi La Forge (VISOR, bionic optical implants)
 * Jean-Luc Picard (artificial heart)
 * Worf (artificial spine)
 * Seven of Nine (prosthetic eye, various Borg implants)
 * Nog (Bionic Leg)
 * Borg Queen (artificial Borg body)

Minor characters:
 * Riley Frazier (arm)
 * Orum (optical implant)
 * Icheb, Mezoti, Azan, and Rebi (reinforced cardiac organs)
 * Marika Wilkarah, Lansor, and P'Chan (artificial collective)

Species
Borg: The Borg purposely modified limbs by either adding or extracting certain parts in order to enhance them for specific tasks.

Bynar: When a Bynar was born, a surgeon removed the child's parietal lobe and replaced it with a synaptic processor. Doctor Phlox saw the procedure performed when he encountered the Bynars. He likened the Bynar system to, unknown at the time, a benign form of the Borg Collective.