Osteoarthritis(OA)caused by the every kind of and different reasons is the prevalent articular disease that is characteristic of joint cartilage degeneration. It is common diseasee. It is well know that OA is due to turbulence of burthen, the low activity of the superoxide dismutase, cell factor, high intraosseous pressure and so on. Taking AA male chicken as study object because they walk on two legs like human being, we study the effect of treatment OA with external fixator which was used for reducing bur...