Fig. (2) X-rays (anterior-posterior and lateral) of the knee joint of a 73-year-old female patient 25 months after implantation of a cement-free Genia^® total knee replacement (left) with an anti-allergic (Ti(Nb)N) coating, as well as X-rays of a 55-year-old male patient 24 months after implantation of a cemented Genia^® total knee replacement made of a cobalt-chromium alloy (right). No radiolucent lines were detected around the components in either of these cases. In the lateral view of the total knee replacement with the anti-allergic coating, a gap is visible in femoral zone 1, which is caused by discrete over-dimensioning with flexed positioning of the component.