Fig. 5From: Prevalence of extra-articular tibia valga morphology in valgus knees and its implications for primary total knee arthroplastyEOS radiograph demonstrating measurement of extra-articular tibial deformity in valgus knee. Close-up of the knee joint and leg of a pre-operative, weightbearing lower-limb anteroposterior EOS digital radiograph is shown. The angle formed by the proximal and distal tibial mechanical axes is the centre of rotation angulation (CORA-tibia)Back to article page