Going up and down stairs: Of all the joints in the body, large and small, the knee joint is the most often and most vulnerable to injury. Du Xinru said, when going up the stairs, the knee joint bears 4.8 times the weight, and 6.7 times the weight when going down the stairs. It is very easy to produce pressure on the patellofemoral joint, and over time it is easy to cause pain between the cartilage. Solution: Try to slow down the speed when going up and down the stairs and up and down the slope, try to turn sideways 45-90 degrees; when going downhill, try to use the handrail; the elderly can use more crutches to reduce the pressure of the body’s weight on the knee. Cross-legged sitting: Many people like to sit cross-legged, and some young people also like to sit cross-legged in bed and use a laptop. In fact, while sitting cross-legged, the knee cartilage has been under pressure, but also to bear the weight of the upper body. If you sit cross-legged using the wrong force, over time, some people’s knees can even immediately too painful to get up. Solution: people who have the habit of cross-legged, you can only bend a leg, natural and easy, do not bend both feet together, and do not force the leg down. Kneeling on the floor: Du Xinru said, from time to time in the clinic to encounter knee pain women to come to the doctor, they are mostly used to kneeling at home to wipe the floor, triggered by patellofemoral pain. Kneeling on the floor, the pressure of the patella will press on the femur, equal to the cartilage between the two bones directly to the ground, a long time, some knees can not straighten, can not get up. Solution: Try not to kneel to wipe the floor, even if you have to kneel to wipe, you can consider a cushion under the knee, and kneeling time can not be too long, it is best to take a break every 10-20 minutes to maintain blood circulation, nourishing joint cartilage. If you want to be more comfortable, why not simply sit directly on the floor, or prepare a small bench. Men and women are the same.