A simple TKA, yet fully dedicated to performance Without concession to the tribology of the knee joint, nor to the quality of materials used and their manufacture, the Universal ROLFLEX TKA proposes a simplified range of sizes: Femoral Condyles and tibial baseplates made of Cobalt-Chromium Reversible femoral Condyles right and left available in 6 sizes for cemented use only A/P and M/L dimensions, and femoral resections identical to those of the Anatomic version Accentuated and highly congruent trochlear groove identical to Anatomic version Reversible tibial baseplate right and left available in 6 sizes, including the 3 smaller sizes with short keel Center of rotation of tibial insert in the middle of the M/L dimension The available tibial inserts, available in 5 thicknesses are made of polyethylene PEXEL moderately crosslinked and vacuum-packed. Instrumentation set limited to 3 trays