More recently, robotic-assisted surgery has become more popular as technology improves. Robotic surgery is a drastic improvement compared to joint replacements performed with computer navigation or mechanical jigs. Surgical robots are more precise, which offers multiple benefits throughout the surgery.
There are three main types of robots: active, haptic, and passive. Active systems attempt to perform the entire operation with minimal input from the surgeon. Studies have not demonstrated that these systems are much better than navigation. Passive and semi-active systems, where the surgeon does the majority of the work and the robot functions as a supportive role, are popular. The robot provides feedback on re-shaping the bone and positioning of the implant. This leads to more precision than the human eye.