 The objectives of the study are twofold: 1 Evaluate how intra-operative sensing may assist the surgeon with tibiofemoral rotational alignment by testing the precision and variability of setting tray rotation to the mid-third of the tibial tubercle. 2 Understand if patients with a combined axial rotation couple at the tibiofemoral joint and quantitative intercompartmental balance, achieved with the use of VERASENSE, exhibit less post-operative knee pain and improved clinical outcomes. Radiographic outcomes will also be assessed to measure post-operative alignment and to evaluate the prevalence and location of radiolucency andor osteolysis. 