Knee pain is one of the more common conditions in middle-aged and older adults, collectively known as knee osteoarthritis. The most common of these are chondromalacia patellae, cartilage wear and fat pad inflammation. Most of these diseases manifest as knee swelling, soreness, and in severe cases, thigh weakness, etc. Especially when going up and down stairs, knee joint surface friction is high and knee joint swelling and pain are most obvious. There is no cure for knee osteoarthritis in the elderly. The main goal is to control pain and stiffness symptoms and improve self-care. Moderate exercise helps patients with knee pain to relieve symptoms and manage the condition. However, some elderly patients rarely exercise because of joint pain, and the lack of activity leads to muscle atrophy and stiffness of the joints, aggravating the progression of the disease. Therefore, middle-aged and elderly patients with osteoarthritis are hereby reminded to perform appropriate exercises. Exercise methods – supine leg lift: supine bed, the affected leg upward lift about 15 °, the initial do can be maintained for 1-3 minutes, contact a period of time, you can increase the air stagnation time, 2-3 times a day, this method is mainly to exercise the leg muscle strength. Enhance the muscle strength of the thigh, extend the duration of contraction of the quadriceps muscle, but not to make the joint cartilage suffer more damage, so that the knee joint in a normal state of activity, is the best way to prevent knee pain. High Horse Stance: Both knees are slightly bent (10-30 degrees), so that the knee joint is not painful. Squat still, with both hands flat and eyes forward, start to insist on a few minutes and gradually increase the time. Generally reach about 10 minutes each time, twice a day. Sitting knee extension: Sit on a chair, square your feet on the floor, then gradually straighten your right (left) knee and hold a straight leg position for 5-10 seconds, then slowly lower it, alternating legs, repeat 10 times, once to twice a day. Prone knee flexion: Prone position with hands crossed under the head, then gradually flex the right (left) knee as close to the hip as possible and hold the flexed knee position for 5 to 10 seconds, then slowly lower it, alternating knees, 10 times, once to twice a day. Supine knee flexion: Place one knee as close to the chest as possible and hold the thigh in a fixed position with both hands for 5 to 10 seconds, then gradually straighten the knee, alternating between the two legs. Repeat 10 times, one to two times a day. Push and rub the thighs: Sit in a chair with both knees bent, attach the palms of both hands to the sides of the right (left) leg, then push and rub along the sides of the thighs toward the knee joint 10 to 20 times, alternating between the legs, once to twice a day. Press the patella: Sit on a chair, bend both knees about 90°, square both feet on the floor, place the palms of both hands on the patella of the knee, open the five fingers slightly and press them tightly around the patella, then press the patella 20 to 40 times with a little force evenly and rhythmically. In addition to the above exercises, how should I exercise for knee pain? Generally speaking, you can choose mild exercises with less impact, such as walking, tai chi, swimming and moving the lower limbs in place, but when exercising, you must be scientific and moderate.