Figures & data
Figure 1. Definition of TEA (2) and PKA (1) on an axial CT scan of the distal femur.
Figure 2. Screenshot during the navigation process: calculation of the angle (in this case 3.2°) between the TEA (yellow line) and PCA (blue line).“Ext.Rot. from Post.Line” refers to the rotation of the femoral component in relation to the PCA. By definition, the femoral component of the prosthesis is always positioned parallel to the TEA. Therefore, the number of degrees by which the prosthesis is rotated in relation to the PCA is equivalent to the condylar twist angle. [Color version available online]
![Figure 2. Screenshot during the navigation process: calculation of the angle (in this case 3.2°) between the TEA (yellow line) and PCA (blue line).“Ext.Rot. from Post.Line” refers to the rotation of the femoral component in relation to the PCA. By definition, the femoral component of the prosthesis is always positioned parallel to the TEA. Therefore, the number of degrees by which the prosthesis is rotated in relation to the PCA is equivalent to the condylar twist angle. [Color version available online]](/cms/asset/8cde48e7-eb1d-42ba-9283-76f92f5a73d3/icsu_a_163248_f0002_b.jpg)
Figure 3. Graphic representations of the statistical analysis: (a) linear model, r = 0.095/tau = 0.072; (b) difference plot.
