The purpose of rehabilitation training is to strengthen the muscles around the knee joint, enhance the stability and balance of the knee joint, and reduce joint surface impingement. Enhancement of nutrition of joint cartilage and synergistic medication to improve clinical symptoms. Training methods for knee mobility conditions. Including knee mobility (Rom), quadriceps and N cord muscle training. The following focuses on the quadriceps training method: The patient sits on the edge of the bed with the knee joint resting just naturally on the edge of the bed and flexes the knee joint. Extend the ankle joint as far back as possible, extend the knee as far as possible, tense the quadriceps, make the patella pull proximally, then count five times and relax, that is, once. You can do this 50 times per hour. You can also use heavy objects, obstacles and other resistance to prevent active knee flexion and extension. The main points of the action: hook the back of the foot, forcefully extend the lower leg, back straighten the knee joint, quadriceps contraction pull up the patella. Yin Jiguang, Department of Bone and Joint, Affiliated Hospital of Shandong University of Traditional Chinese Medicine