Fig. 4From: Combined femoral and tibial component total knee arthroplasty device rotation measurement is reliable and predicts clinical outcomeBerger’s femoral component rotational angle (BFA) Band–Altman plot agreement. The inter- A and intra-observer B agreement between two measurements. For inter-observer agreement, Observer 3 was taken as reference and the first reliable rotational measure was used. For intra-observer agreement, the first and second reliable rotational measure of the three observers was takenBack to article page