Osteoarthritis, bone spurs commonly known, is a manifestation of the aging of the human skeleton, so after 40 years only began to emerge, and gradually increased with age. In fact, the bones appear hyperplasia, like old people face to wrinkle, is the body's natural processes. Strictly speaking this is not a disease. So why bone hyperplasia it? I briefly explain the microscopic mechanism of the development: we human beings can stand to walk jump, is to play a supporting role in our bones, ligaments play a connecting role in muscle contraction energy.