The usual rehabilitation exercises for knee osteoarthritis, patients can carry out the correct and appropriate exercise, such as walking, swimming, cycling, but avoid doing the same action for a long time or make the joint fixed in the same position. The following methods can be chosen for the rehabilitation of knee arthritis: 1. Quadriceps strength training: supine position, straighten the knee joint, tense the muscles in front of the thigh to do static contraction of the quadriceps. This knee arthritis rehabilitation exercise method, each contraction as hard as possible and adhere to a long time, repeated several times to the thigh muscles feel soreness is appropriate. 2, half squat exercise against the wall: knee arthritis rehabilitation exercises such as standing on the wall, knee, hip flexion of not less than 90 degrees, as a half squat, adhere to 10 seconds after standing up, rest for a moment and then squat, every 10-20 times for a group. 3, no weight-bearing lower limb joint active flexion and extension: supine, one side of the lower limb straight, the other side of the lower limb knee flexion hip, so that the thigh as close to the chest, and then alternate exercises on the other side of the lower limb, which is also a rehabilitation exercise method for knee arthritis. 4, straight leg lift exercise: supine position, straighten the lower limb and lift off the bed about 30 degrees, adhere to 10 seconds and then slowly put down, rest for a moment and then repeat the training, every 10-20 times for a group, training until the muscles have a soreness and swelling. In addition, rehabilitation exercises for knee osteoarthritis can be performed by tying an appropriate amount of sandbags to the ankle, and gradually increase the weight of the sandbags as the strength increases.