text: Surgeons use GPS for better knee surgery - Geospatial World
  Home Health Surgeons use GPS for better knee surgery
  Rush University Medical Center is among the first hospitals in US to use a computer-assisted navigation system in orthopedic joint replacement surgery.
  The image-guided navigation system is similar to the location and directional tracking systems used for cars and ships today — it is, in effect, GPS for the surgeon. Informative positioning calculations are displayed on a graphically intuitive screen, which dynamically changes with the individual patient's anatomy.
  The image-guided surgery (IGS) camera works like the satellite that detects signals from cars, boats, and other vehicles equipped with special tracking devices. As the surgeon moves an instrument within the patient's joint, the IGS camera, like the GPS satellite, calculates its position, and then transfers that data to a computer in the operating room. The computer then shows the direction and location of the instrument.