This KNEE manufactured by Nacional Ossos for planning and training of orthopedic surgery, with mechanical properties similar to human bone, is composed of RIGHT FEMUR AND RIGHT TIBIA, joined by a simulation of the collateral ligaments (lateral and medial) and crossed (anterior and posterior) Ideal for placing screws, plates, external fixator and anchors in studies, surgical practices, distance courses (EAD) and workshop, being able to be cut and perforated.It allows the orthopedist to have a training, very close to the real one, being qualified 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.