I. What conditions are suitable for knee joint replacement surgery? 1, various inflammatory arthritis of the knee joint, including rheumatoid arthritis, osteoarthritis, etc.; 2, a few primary or secondary osteochondral necrosis diseases. Second, how to choose a good artificial knee joint? When a patient decides to use artificial joint replacement treatment, the question is often raised: what kind of artificial joint is the best artificial joint? It should be said that different patients should choose different artificial joints. Artificial joint prostheses have very strict requirements in terms of design, surface treatment, material selection, manufacturing process and packaging; they also require sufficient clinical practice to confirm the effectiveness of a particular artificial joint. At present, the artificial knee joint has become a very mature artificial joint, both in terms of the prosthesis itself and in terms of surgical techniques. The artificial knee joint has been widely used in clinical practice with good clinical results. The artificial knee prosthesis is not easy to “replace” when it is placed in the body, so the choice of a good artificial joint should be made carefully under the guidance of experts. Post-operative examination Three months after discharge from the hospital, a review should be made to take X-rays to see if the position and stability of the joint prosthesis is good. If there is any discomfort, such as redness, swelling, pain, or difficulty in moving the joint, or if the joint is injured due to an accident, go to the hospital in time for an examination. The knee joint is an important joint, it has various functions such as walking, running, jumping and squatting, and it also carries the weight of your body. Once the knee joint is diseased, the cartilage of the joint is destroyed and the surface turns from a smooth mirror-like surface to a rough or even defective surface, further deforming the femoral condyles. This results in pain, difficulty walking, limited mobility, limping, and sometimes difficulty performing even easy movements. When the above disease has progressed to a certain point and the joint has been destroyed, surgery is required. An artificial knee joint is used to replace the damaged joint (the timing of the surgery should be decided by the surgeon) to restore function such as walking. The greatest benefit of artificial joint surgery is that it eliminates post-operative joint pain, greatly improves the function of the joint, and increases the patient’s quality of life so that he or she can work and live well during their lifetime. Nowadays, more and more patients are happy to accept the suggestion of artificial joint surgery. The longevity of the artificial knee joint is determined by two main issues: the wear and tear of the joint and the loosening of the prosthesis caused by wear particles. The strength and wear resistance of the artificial knee material has been tested hundreds of times, and high-quality imported artificial joints can generally satisfy patients for more than 20 years. The artificial joints currently used in clinical practice are much better than those used 20 years ago, and it is believed that more than 95% of the artificial joints that have been placed now will continue to work for another 20 years. A successful artificial joint replacement will allow you to live a pain-free life and meet your daily activities, and for a damaged knee, no other treatment can achieve the same results. Of course, the longevity of the artificial joint depends on many factors, such as the patient’s exercise level, the choice of artificial prosthesis, the surgeon’s surgical technique, and your own condition. After artificial knee replacement, you need to develop good habits of life and activities to maintain the stability of the joint, and learn some simple rehabilitation knowledge to carry out joint rehabilitation exercises. You should pay attention to the prevention and treatment of infections such as tonsillitis, skin infections, ringworm, etc. After surgery, you can do cycling, walking, dancing, swimming and other sports, but running, jumping and other strenuous sports, as well as long-distance walking, climbing, etc. are not encouraged. Rehabilitation after knee arthroplasty Rehabilitation exercises are essential for the success of total knee replacement surgery. Isometric contraction of the muscles of the affected limb can be performed after surgery. If the joint is well positioned and fixed, rehabilitation exercises, including straight leg raising, quadriceps and walking exercises, can be started under the guidance of the physician and rehabilitation specialist. Even after full recovery, regular rehabilitation exercises are usually required. Advantages and disadvantages of artificial knee surgery Artificial knee replacement surgery can improve the mobility of the knee joint and relieve pain. However, the disadvantages are as follows: 1. It has an effect on sports such as running and hiking. 2. After surgery, the knee joint is usually bent slightly more than a right angle, about 120 degrees. 3, 10-15 years after surgery, it may be necessary to operate again due to prosthesis loosening, prosthesis instability and prosthesis wear. 4.The treatment of infection after knee replacement is difficult, and even the joint prosthesis has to be removed and the joint re-replaced after the infection is controlled. 5, The price is more expensive, usually costing 50,000-70,000.