Kelly BC, Owen JR, Shah SC, et al. - This research was undertaken to evaluate the biomechanical properties of three different tibial baseplates to understand potential causes of failure. A standardized technique was applied to implant PFC Sigma (control), Attune (1st generation), and Attune S+ (2nd generation) tibial baseplates into 4th generation sawbone tibia models. Researchers investigated all models to failure with measured axial distraction force. In comparison with older designs, the 2nd generation baseplates required significantly more force to failure. It was reported that the presence of bone marrow during the cementation of a tibial base plate significantly decreased the axial pullout strength of a tibial baseplate in this laboratory model. As per the outcomes, all 1st generation baseplates showed debonding at the cement-implant interface.