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Preoperative simple radiographs of the left knee showing (A) arthritic changes of the medial compartment with a varus deformity. (B) Long-leg weight bearing radiograph showing mechanical axis passing medial to the medial compartment of the knee and angular measurements of the knee. M-LDFA: mechanical lateral distal femoral angle, A-LDFA: anatomical lateral distal femoral angle, TFA: tibiofemoral angle.
