Rehabilitation exercises after knee replacement include exercises for joint mobility, exercises for strength around the joint, and also exercises for walking and adapting to the new joint activities. In order to overcome the pain, you can practice the joint mobility function properly. The earlier the joint mobility, the better for the postoperative function. Exercises for strength around the joint muscles, such as straight leg raising and straight leg abduction, are needed to enhance the muscle strength contraction and prevent deep vein thrombosis and muscle atrophy. To properly walk on the ground, under the protection of the walking aid, appropriate exercise, gradually adapt to the prosthesis in the process of human movement, the impact of activities on the human body.