Fig. 6

TKA combined rotation angles Bland–Altman plot agreement. The inter- A and intra-observer B agreement between two measurements. TE_PTCA transepicondylar posterior tibial component angle, BC_PTCA, bicondylar posterior tibial component angle, TE_BM transepicondylar bimalleolar angle, BC_BM bicondylar bimalleolar angle, Ob1 Observer 1, Ob2 Observer 2, Ob3 Observer 3 First measure: 1; second measure: 2