The knee is not the most vulnerable part of the body, but it can be the weakest part. When it comes to knees, you have to have a concept. First of all, the structure, femur or tibia and fibula of femur and calf, kneecap, also known as patella, constitutes the knee joint. There are two large cartilage discs between femur and tibia, which are called medial meniscus and lateral meniscus respectively. There is a groove suitable for placing the patella at the front and lower end of the femur, which can make the patella move up and down in the groove very satisfactory. The cartilage on the surface of these joints can absorb vibration and bear pressure until problems occur. Cartilage, especially meniscus, is the most vulnerable part of human body during exercise.

Knee joint pain needs attention in daily life.

Don't walk too long. When your knee feels uncomfortable, you should rest immediately. "Rest is to walk longer."

Avoid squatting, squatting or kneeling. Like squatting.

Maintain an ideal weight and reduce the burden on your knees.

Keep your knees warm. You can wear pants and knee pads to protect your knees.

Move less heavy objects and wear less high heels.

Insufficient activity can easily lead to knee joint stiffness, while excessive exercise will accelerate joint wear. Swimming and walking are very suitable for knee joint degeneration. But the degree of exercise is that the joints do not feel pain, and if they feel pain, they should rest. Here are two health exercises that are helpful to the knee joint.

Straight leg lifting exercise: when lying flat, slowly lift your legs, about one foot off the ground, keep your knees straight for about five to ten seconds, and then slowly put them down. Do it twice a day for five to ten minutes each time.

Kneeling and leg-lifting exercise: Sit in a chair and slowly straighten the knee joint from the knees, and keep the knee joint straight, then slowly put it down for about five to ten seconds, and take turns with your legs twice a day for five to ten minutes each time.