The transepicondylar axis or the posterior condylar axis: Which is the best reference for femoral component rotation in robotic-assisted total knee arthroplasty?

The inter-surgeon consistency of the PCA was significantly greater than that of the TEA in robotic-assisted TKA planning. To mitigate the risk of inappropriate femoral component rotation, surgeons should verify landmark positions, particularly in patients with anatomical abnormalities of the distal femur, and consider cross-referencing both axes. Video Abstract.