The present invention refers to a supporting device for surgical procedures on foot, ankle, knee, thigh and whole leg, where such device comprises three pieces, one of them to provide support to the whole leg, wherein such piece presents an orifice at the leg's calf level which allows said calf to be introduced through the orifice so that the leg is completely supported and aligned parallel to the main piece, a second piece which supports on at least three specific points of the foot's sole, with the characteristic that this secondary piece comprises a space that allows the surgeon to board/drill the calcaneus bone for those surgeries that require an intramedullary nail to be placed through the calcaneus bone, and a third angular piece which has an L-shape with a 90 degree angle to allow the surgeon to align the main piece and the secondary piece when the surgery is being performed.