Association of sagittal alignment of tibial and femoral components with clinical outcome in total knee arthroplasty: A prospective cohort study.

There is a positive association between the proper sagittal alignment of femoral component and tibial component in total knee replacement with clinical outcome. The functional outcome (in terms of mean American Knee Society score) is better when the femoral component is positioned in extension and the posterior tibial slope of less than 5° is achieved.