Fig. 1From: Measurement of femoral posterior condylar offset and posterior tibial slope in normal knees based on 3D reconstructionThe anatomical transepicondylar axis (TEA) was defined as the straight line connecting the most prominent aspects of the medial and lateral epicondyle (orange line). The sagittal plane perpendicular to the TEA was defined as the true-sagittal plane (tsP) (green line)Back to article page