Fig. 2From: The range of the required anterolateral cortex osteotomy distance varied widely in biplanar open wedge high tibial osteotomyThe X-axis was defined as the line parallel to the tibial plateau in the coronal plane. The Y-axis was defined as the line perpendicular to the medial tibial plateau in the sagittal plane. The Z-axis was defined as the anteroposterior axis of the knee in which the patella was located in the centre of the distal femurBack to article page