Figure 4

Axial rotation kinematics in the Anatomic Landmarks group. Axial rotation kinematics in TKR categorized as A) nominal and B) outliers in the Anatomic Landmarks group. Relative motion between the femoral component and tibial baseplate (total axial rotation), between the femoral component and polyethylene bearing (articular axial rotation) and between the polyethylene bearing and tibial baseplate (bearing axial rotation) were distinguished.