We have attended to an amazing development in total knee replacement designs for the last years.Everyone grows with the idea of improving the good outcomes of this procedure. The search an ideal frictiontorque has assumed a better manufacturing of the insert and even the usage of new materials with great successin other joints, but whose profits in the knee must be tested. Accuracy and outcomes reproducibility led to addrobotic to this procedure. Likewise the need to recreate joint kinematics provoked the evolution to designs withpreservation of cruciate ligaments or with different constriction in each compartment. However, we must be carefulwhen analysing benefits of these improvements.

We have attended to an amazing development in total knee replacement designs for the last years.Everyone grows with the idea of improving the good outcomes of this procedure. The search an ideal frictiontorque has assumed a better manufacturing of the insert and even the usage of new materials with great successin other joints, but whose profits in the knee must be tested. Accuracy and outcomes reproducibility led to addrobotic to this procedure. Likewise the need to recreate joint kinematics provoked the evolution to designs withpreservation of cruciate ligaments or with different constriction in each compartment. However, we must be carefulwhen analysing benefits of these improvements.