Osteoarthritis of the knee is the most common degenerative disease of the elderly. In layman’s terms, there is a layer of cartilage in the joint, which is the white, shiny, brittle bone that is usually eaten on the surface of bones, and it is very flexible, tough and smooth. With the growth of age, cartilage also aging, is not as strong as when young, not wear-resistant, but also lack of lubrication. At this time, the pressure of standing activities, heavy weight, strenuous exercise, etc. on the already fragile cartilage, it is easy to wear, is not smooth, there will be a creaking sound, and then serious wear so that the cartilage is broken, fall off, the symptoms are gradually increasing pain, joint activity to a serious angle of wear and tear back to the jam, can not move and pain, when exerting more pressure on the more pain; long may be all or part of the cartilage worn out, leaving only bone. Only bones are left. If you understand the above reasoning, you will know that you should protect the cartilage and reduce wear and tear at an older age, and that general joint activities will not aggravate cartilage damage as long as they are not strenuous. After all, there are many elderly people and leg pain is a minority, that is, the vast majority of elderly people do not have excessive activities. If you already have the disease, there are many different treatments for different conditions and individual differences, so it is impossible to make a generalization. The human body is constantly active in metabolism and has a strong ability to repair and regenerate, and the treatment methods are all to help and guide the body to repair itself. When a variety of methods are ineffective, severe pain to walk less than 100 meters, and such a situation continues for more than a month, then the treatment is the only last resort: artificial joint replacement, because the current joint really can not restore a certain function, can only be replaced by a substitute, this substitute is not active, the day will be more quickly wear, more need to save, once the problem occurs again and then repair the effect is even less The effect of repairing the joint is even less desirable.