Radiographic measurements of TKA component placement in the coronal plane. Limb coronal alignment is measured by the medial tibio-femoral axis angle (mTFA), defined as the medial angle between the anatomic femoral and tibial axes. A restored neutral mechanical alignment in the coronal plane was considered when the mTFA was 185° ± 3°. Femoral component placement in the coronal plane is measured by the α angle, defined as the angle formed between a line formed by the femoral condyles of the femoral component and the anatomical femoral axis. An α angle of 95° ± 3° represents a correct placement of the femoral component in the coronal plane. Tibial component placement in the coronal plane is measured by the β angle, defined as the angle formed between the tangent line at the base of the tibial component and the anatomical tibial axis. A β angle of 90° ± 3° represents a correct placement of the tibial component in the coronal plane.