Khasian M, Meccia BA, LaCour MT, et al. - This study was undertaken to investigate the impacts of tibial slope on femorotibial kinematics and kinetics for a posterior cruciate-retaining (PCR) Total Knee Arthroplasty (TKA) design. Researchers implemented a validated forward solution model of the knee to prognosticate the femorotibial biomechanics of a PCR TKA with varied posterior slopes of 0-8° at 2° intervals. The outcomes of this study demonstrate that, although elevating the tibial slope shifted the femur posteriorly at full extension and maximum flexion, it decreased the amount of femoral rollback. Despite the lack of rollback, a more posterior location of condyles implies lower variations of bearing impingement of the posterior femur and may explain why elevating slope may lead to higher knee flexion.