Which diseases are suitable for artificial knee joint replacement? Age-related osteoarthritis, rheumatoid osteoarthritis, post-traumatic arthritis, peri-knee tumors, old knee tuberculosis, old knee septic arthritis, failed joint osteotomy. If you have any of these conditions, are 55 years of age or older, and have joint pain, deformity, or instability that has not been treated with other medications, you may be considered for an artificial knee replacement. The most common patients who receive knee replacements are older patients with osteoarthrosis. Patients younger than 55 with rheumatoid arthritis and knee tumors may also receive knee replacements. Preparation for surgery: After your hospitalization, you will need blood, urine, stool, biochemistry, chest and lung X-rays, ECG, echocardiogram, and knee X-rays to determine if there are any contraindications to surgery. If you have a history of diabetes or hypertension, please inform your supervising physician to help you regulate your blood sugar and blood pressure. If you have other medical conditions and have been taking medication for a long time, please inform your supervising physician if the medication will affect the surgery. Also pay attention to your diet, sleep, stop smoking and drinking, and build up your physical strength in preparation for surgery. The day before the surgery, you will need your family to sign for the surgery and the anesthesiologist to sign for the anesthesia, and the anesthesiologist will ask you if you need a postoperative analgesic pump. The night before surgery, you will need to fast from food and water. If you cannot sleep at night, you may ask the nurse for a Valium tablet. You need to wear elastic stockings on the healthy limb before going into the operating room, and then wear them after the affected limb returns to the ward after surgery to prevent deep vein thrombosis of the lower limb. After surgery, you may experience nausea and vomiting due to the anesthetic reaction. If you do not have an indwelling analgesic pump, you may feel severe pain in the wound for 3 days after surgery, and you may request pain medication depending on the severity of the pain. You will find a hose leading from the wound and blood will flow out into a plastic bottle. The next day we will change your wound dressing. If the amount of blood collected in the wound is less than 50 ml within 24 hours or if the plastic bottle has been in place for 3 days, the drainage tube will be removed as appropriate. After recovery from anesthesia, you will start functional exercises, which are listed below, please consult your doctor and nurse in charge for details. Your incision is usually 15 cm and you will be discharged one week after surgery, when your artificial knee should be able to straighten, flex 90 degrees and walk with a walker. You will need to have a dressing change and stitch removal two weeks after surgery. After discharge from the hospital, it is important that you keep up with the appropriate exercises, otherwise you may lose the joint function you have gained after surgery. Please first consult whether you are suitable for the following exercises. The above exercises can be performed once a day or every other day for 20-30 minutes in the order of ①②③③④. The purpose of the exercise is to maintain the range of motion of the knee joint from 0-90 degrees and the stability of the joint, with the range of motion of the joint reaching 0-90 or 100 degrees during the exercise. If you feel persistent pain and swelling in the joint after the activity, the exercise is too intense. You will also have to learn to use crutches to get up and down stairs. Daily life: Usually you will be able to walk without crutches 10 weeks after joint replacement. You can perform most daily activities, use a commode, sit in a chair, walk, ride a bike, dance, and swim. You may not be able to sit on a low stool, squat in a potty, or make a low, soft couch. In addition, climbing hills, stairs, and running are not recommended or should be done sparingly because of the damage to the artificial joint. Choosing appropriate activities will not only maintain joint function but also improve health and weight control. Weight control is especially important for obese patients. Special Note: You may be alarmed when going through airport security, please show proof of diagnosis. Abnormalities: If the joint is persistently swollen and painful, the skin is red and warm, and the wound is running out, be on the alert for a joint infection, which is rare but the most serious complication. If your artificial joint has been used for several years and you have recently experienced joint pain when moving, it may be a loose or worn joint. Please go to the hospital for prompt treatment of these conditions. Dietary management: Osteoarthritis of the knee joint is mostly caused by excessive weight bearing, local injury, or living in a cold and humid place for a long time, wind, cold and dampness invade the tendons and bones, stagnation of qi, blood and fluid does not work, the tendons and bones lose their warmth and moistening, and the cartilage and bone structure of the joint breaks down and the edges grow and form bone spurs. Clinically, the diet can be adjusted appropriately according to the different evidence. 1, liver and kidney deficiency, recurrent joint pain, weakness, joint deformation, or knee inversion or tendon outward migration, accompanied by dizziness, tinnitus, lumbar acidity, light tongue, white coating, thin pulse. Diet should be supplemented with qi and blood, and benefit the liver and kidneys, using rehmannia, angelica and astragalus in chicken soup, dulcimer and cow’s knee in pig’s foot tendons, and peach kernel congee. Chinese medicine should be taken in warm portions. 2, deficiency of qi and blood cold joint swelling and pain, cold, exacerbated by exertion, pale face, warmth and fear of cold, weakness of the limbs, little food and loose stools, light tongue, white moist coating, sunken and weak pulse. Pay attention to the diet, it is advisable to nourish the qi and blood, warm the menstruation and strengthen the yang products, such as ginseng and astragalus and angelica porridge, black chicken and ripe earth soup. Chinese herbal soup should be taken warm. 3, wind-cold paralysis Swelling of the knee, fluid in the knee joint, soreness and heaviness of the knee, inconvenience in movement, lingering pain, aggravated by rainy, cold and humid weather, light red tongue, thin white greasy moss, moist and slow pulse. Diet is recommended to dispel wind and win dampness, warming the meridians and opening the channels, such as ginger and garlic spicy noodles, porridge with onion and white onion, or beef knee and doklam with pig pancreas, etc., eaten while hot to the extent of sweating. Chinese herbal soup should be served warm. 4. Damp-heat injection Knee pain, redness and swelling, sensation of heat, cold is soothing, warm is painful, pain is not approachable, joints cannot move, urine is yellow and red, tongue is red, moss is yellow and greasy, pulse is slippery. Diet should be clear of heat and dampness, such as corn husk in water as a tea substitute, barley and winter melon soup, divided into three times a day. Chinese herbal soup should be taken warm.