Fig. 3From: Could surgical transepicondylar axis be identified accurately in preoperative 3D planning for total knee arthroplasty? A reproducibility study based on 3D-CTThe blue plane represents the transverse plain; the blue and green dashed line are the projections of sTEA and posterior condyle axis on transverse plain, respectively. The angle between the above two lines is denoted as posterior condylar angle (PCA)Back to article page