Exercises for leg muscle strength are helpful for people with knee arthritis and hip arthritis. You can do exercises like this: sit in a chair with your leg straight and at a 30° angle to the ground, keep your toes taut for 10 seconds, then cock your toes, also for 10 seconds, so that there is tension in the calf muscles, then lower your leg and relax. This way the toes are alternately tensed, cocked and relaxed, it will exercise the leg muscles. Do this for 15 minutes each day in the morning and afternoon, and keep exercising to improve joint stability. For patients with knee arthritis, some of the following exercise methods can damage the joint: 1, climbing stairs: there is experimental evidence that the pressure on the knee joint when climbing stairs is about three times the body’s own weight. Knee joints are susceptible to knee arthritis when they are under such pressure for a long time; 2, mountain climbing: Although the air is fresh, mountain climbing and stair climbing are the same principle and can cause damage to the knee joints; 3, wearing high heels: wearing high heels will shift the body’s center of gravity forward, which will also cause greater pressure on the knee joints; 4, taijiquan: when playing taiji palm, the body’s center of gravity is low, and the movement should be carried out slowly, which will cause the knee joints to be overloaded and cause knee pain. Too much, causing knee pain and accelerating the wear and tear of joint cartilage. Knee function exercise 1, the first section of sitting exercises: take a sitting position, alternately swing the two lower legs or straighten the left and right lower limbs, hook up the toes. 2, the second section of the supine exercise: take the supine position, you can choose any one of the following four exercise methods to practice: (1) alternate flexion of the lower limbs, the foot followed by the bed as far as possible; (2) double lower limbs lift off the bed, alternate flexion, straightening, as pedal bicycle; (3) straighten both lower limbs, flexing one lower limb, foot flat, slowly lift the other lower limb to the maximum, hold for 5 seconds, and then put back to the bed (4) straighten both lower limbs, knee in the straight position, press down by others, hold for 5 seconds, relax for 5 seconds. 3, the third section of the side lying exercises: choose a comfortable side lying position, so that one lower limb flexed in front of the chest, the other lower limb to try to straighten backwards, alternating between the two lower limbs or the side of the lower limb against the bed flexed in front of the chest, while the other side of the lower limb straight, lift up, hold for 5 seconds, change the side lying direction and repeat the above actions. 4, the fourth section of the prone position exercises: prone on the bed, alternating backward flexion of both lower legs, heel towards the buttocks. 5, the fifth section of standing exercises (alternating standing and sitting exercises): stand with both lower limbs slightly apart, keep the trunk straight, bend the knees, bend the hips downward movement, and then take a sitting position. 6, the sixth section of the walk exercise: hands crossed waist, first 5 steps forward, walk heel first, the body weight from the heel to the toes, and then backward, back when the toes first, the body weight from the toes to the heel.