This study compares the accuracy of two different techniques in placing a total knee replacement. In one technique, accurate instrument placement is facilitated by a robot, and in the other technique, augmented reality is used for correct instrument placement. Both surgical techniques are already commonly used. During both the robotic technique and the augmented reality technique, the additional information (angles - axes) obtained during the operation is used to optimize the placement of the various prosthesis components. Patients that were recently diagnosed with advanced osteoarthritis of the knee can participate in this study. This means that the cartilage of the knee is affected by wear and tear. This causes pain, stiffness and swelling resulting in reduced mobility. When non-operative treatments are insufficient in treating the osteoarthritis, surgery is proposed wherein a knee arthroplasty is performed. The goal of this study is to further optimize and personalize patient care. Additionally, the aim of the study is to investigate whether both techniques are equivalent in optimally placing the prosthesis and whether both techniques lead to comparable results.