Introduced in 1994, EUROP Standard is a tri-compartmental prosthesis with a fixed allowing for the preservation of the posterior cruciate ligament and to recreate as closely as possible the natural kinematics of the knee. Innovative instrumentation with a ligament balance system allowing minimally invasive surgery. Fixed plate. Posterior indentation of the base metal allows for the conservation of the posterior cruciate ligament. The asymmetry of the posterior tibial condyles allows for the tibia bascule to restore optimal flexion. The curvature and thickness of the trochlea optimizes the patello-femoral gorge.