The use of technology in surgical procedures has gained popularity in recent years.

"The iPod screen shows accurate measurements, angles, positions and the movement that will be possible for each point touched by the sensor pointer connected to it," Dr Mullaji told the Times of India. "The iPod navigation system helps in giving the alignment of the bone joint with 0.1 mm precision."
The system for the surgery assistance has been developed by Smith & Nephew Inc. It works on similar lines to the system used in computer navigation systems.
Source-Medindia