This KNEE manufactured by Nacional Ossos for planning and training of orthopedic surgery, with mechanical properties similar to human bone, composed of RIGHT TIBIA, being the bones with spongy cortical structure and medullary canal, also joined by simulating collateral ligaments (lateral and medial) and cruciate (anterior and posterior). Ideal for placing hip prosthesis, knee prosthesis, intramedullary nail, placement of screws, plates, external fixator, anchors, surgical practices and workshop, can be cut and drilled. It allows the orthopedist to have training, very close to the real thing, training himself with respect to Bioethics.