Fig. 4From: The medial tangent of the proximal tibia is a suitable extra-articular landmark in determining the tibial anteroposterior axisIntraoperative reference for the tibial anteroposterior axis with the medial tangent angle of the tibia. The medial tangent of the tibia can be reproduced by inserting a wire along the medial surface of the tibia. Intraoperative confirmation of the anteroposterior axis of the tibia can be performed with the medial tangent angle of the tibiaBack to article page