The surgical correction for valgus deformities of the knee during total knee arthroplasty is described. Special attention is paid to the compensatory techniques used if undercorrection or overcorrection is present following the initial release and placement of trial components. At the completion of the arthroplasty, the knee should be balanced in both flexion and extension on both the medial and lateral sides so that one side is not so tight as to cause tilting of the femur. The sequence of the soft-tissue release is listed.