1. When arthritis pain occurs, it is best to treat it conservatively, with lifestyle modification as the main focus. The best way is rest, less weight bearing, and appropriate with medication. Intra-articular injection of sodium vitreous acid is a good way. 2. Bone spurs do not necessarily mean osteoarthritis, but most people with osteoarthritis have bone spurs. 3, some bone spurs can make people feel pain, some bone spurs do not hurt. 4, the old cold leg is not necessarily osteoarthritis, but osteoarthritis must be the old cold leg. 5, people’s arms and legs are not in a straight line, it will generally show a flare angle, about 10 to 15 degrees, women than men. This is called the “force line”. If the force line is not normal, it will definitely be “incompatible” with osteoarthritis. 6. Conservative methods cannot correct the force line. Surgery is the best way to correct the force line. 7. Climbing, running and other forms of exercise are not suitable for everyone. Many patients go to the hospital for osteoarthritis surgery after climbing.