Fig. 1From: The medial tangent of the proximal tibia is a suitable extra-articular landmark in determining the tibial anteroposterior axisThe medial tangent angle of the tibia on the horizontal plane. AP, anteroposterior. An asterisk indicates the medial tangent angle of the tibia (MTAT), comprising the medial tangent of the proximal tibia and the anteroposterior axis of the tibiaBack to article page