Fig. 6
From: Effect of limb rotation on radiographic alignment measurement in mal-aligned knees
A real long-leg radiograph in clinics and a virtual long-leg radiograph in this study. a The real long-leg radiograph was captured in weight-bearing condition. b The virtual long-leg radiograph was captured in the non-weight-bearing condition. Both mechanical axis and anatomical axis were measured on virtual LLR. The HKA was defined as the mechanical axial of the femur and tibia. The FTA was defined as the anatomical axial of the femur and tibia