This KNEE manufactured by Nacional Ossos for planning and training of orthopedic surgery, with mechanical properties similar to human bone, composed of LEFT FEMUR AND LEFT TIBIA with medullary canal and joined by, simulating; the collateral (lateral and medial) and cruciate (anterior and posterior) ligaments for further guidance and procedure guidance. Ideal for placing screws, plates, external fasteners and anchors. It allows the orthopedist to have training, very close to the real thing, training himself with respect to Bioethics. It can be fixed on the line of vises, which allow making the necessary movements in all axes for the orthopedist to work with both hands, as in the real patient, firmly and safely.