This LEFT FEMUR manufactured by Nacional Ossos for planning and training of orthopedic surgery, with mechanical properties similar to human bone, with cortical, cancellous and medullary canal. Ideal for placement of knee prosthesis (femoral component), intramedullary nail, placement of screws, plates, external fixator and anchors. It allows the orthopedist to have training, very close to the real thing, qualifying with respect to Bioethics. It can be attached to the line of vises, which allow the orthopedist to work with both hands as necessary in all axes, as in a real patient, with firmness and safety.