The device is a specialized form of external fixator, a circular fixator, modular in construction. Stainless steel (or titanium) rings are fixed to the bone via stainless heavy-gauge wire (called pins or Kirschner wires). The rings are connected to each other with threaded rods attached through adjustable nuts.he Ilizarov external fixators can be used to correct angular deformity in the leg, to correct leg-length differences, and treat non-unions. In most developing countries it is a highly specialized technique used mainly for deformity correction by experienced surgeons due to its complexity.
Confidence votes 164. Killer whales live most of their life in the sunlight zone in the oceans, which near the surface. They have the ability travel further down into the twilight zone, although there isn't much reason to stay there as the food sources they use are much closer to the surface.
Of the 78 species of whales, 11 species are baleen whales, which means that they eat by straining small organisms into their mouth. The rest of the species fall under the category of toothed whales. All whales live in a marine environment, or the sea, except for four species of river dolphins that thrive solely in fresh water. Whales all share a few common features, like blowholes. Blowholes are the nostrils of the whale and are positioned on top of the head.