Retrospective Clinical and Radiological Outcomes after Robotic Assisted Bicompartmental Knee Arthroplasty

Figure 1

The femorotibial angle (FTA, α) formed by the intersection of the anatomical femoral and tibial axes. The tibial posterior slope angle (PS, β) was evaluated in preoperative lateral radiographs by considering the intersection of a line perpendicular to the articular surface of the medial tibial plateau and the anatomical mediolateral axis (i.e., the line between points situated at 10 and 20 cm from the plateau and located midway between the two cortices). In postoperative radiographs, it was determined as the angle formed by the intersection of the anatomical tibial axis and the horizontal axis of the tibial component [4].