Fig. 2From: Arithmetic hip knee angle measurement on long leg radiograph versus computed tomography—inter-observer and intra-observer reliabilityMeasuring the tibia. a A difficult to measure tibia. b The measured MPTA can vary by almost 5° depending on which part of the medial plateau is selected for measurement. c 3D CT of the same tibia demonstrating easier determination of the plateau points (2/3 of the way from anterior to posterior in the deepest part of each compartment)Back to article page