Fig. 3From: Augmented reality-based navigation system applied to tibial bone resection in total knee arthroplastyRegistration of the bone landmarks in the AR-KNEE system. The surgeon registered bone landmarks using the pointer (the pin attached to the resin marker with rectangular two-dimensional bar code). The AR-KNEE system visualized the tibial long and the anteroposterior axes as green and pink lines, respectivelyBack to article page