1.What conditions are suitable for knee replacement surgery? (1) Various kinds of inflammatory arthritis of knee joint, including rheumatoid arthritis, osteoarthritis, hemophilic arthritis, Charcot’s arthritis, etc.; (2) Few cases of traumatic arthritis; (3) Osteoarthritis after failure of high tibial osteotomy; (4) Patellar osteoarthritis of a few old people; (5) Infectious arthritis of resting (including tuberculosis); (6) A few cases of primary or secondary osteochondral necrosis. Cartilage necrosis disease. 2. What are the contraindications for knee replacement surgery? Total knee replacement is contraindicated in the following cases: (1) paralysis of the muscles around the knee joint; (2) the knee joint has been fused in the functional position for a long time without symptoms such as pain and deformity; (3) any part of the body is in the period of acute bacterial infection. 3.How to choose a good artificial knee joint? When a patient decides to adopt the treatment method of artificial joint replacement, a question often mentioned is: what kind of artificial joint is the best artificial joint? It should be said that different patients should choose different artificial joints. Artificial joint prosthesis has very strict requirements on the design of its form, surface treatment, material selection, manufacturing process and packaging; at the same time, it also needs sufficient clinical practice to confirm the effect of a certain artificial joint. As for the present situation, the artificial knee joint has become a very mature artificial joint both in terms of the prosthesis itself and in terms of surgical operation techniques. In our country, artificial knee joints have been widely used in clinical practice and have achieved good clinical results. Choosing an artificial knee joint prosthesis is very different from choosing other commodities, because once the artificial knee joint prosthesis is put into the human body, it is not easy to “replace” at will, and even if it is “replaced”, the cost is quite large, which can’t be measured by money only. So how to choose a good artificial joint should be made under the guidance of experts to make a careful choice. Post-operative examination Three months after discharge from the hospital, you should go to the hospital for review and take X-ray to know whether the position and stability of the joint prosthesis are good. The examination will be repeated six months after the operation, and then every six months thereafter, X-rays will be taken. If there is any discomfort, such as redness, swelling, pain, or difficulty in moving the joint, or if the hip joint is injured due to an accident, you should go to the hospital for examination in a timely manner. 5, the use of artificial knee joint duration and efficacy of the human knee is an important joint, it has to walk, run, jump, squat and other functions, and it is also the burden of your body weight. Once the knee joint is diseased, the cartilage of the joint is destroyed, and the smooth surface of the joint becomes rough or even defective, and further deforms the femoral condyle. As a result, you will experience pain, difficulty walking, limited mobility, limping, and sometimes difficulty in making even easy movements. When the above diseases have 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 surgeon decides when to operate) to restore function such as walking. The biggest benefit of artificial joint surgery is that it eliminates joint pain after surgery, greatly improves the function of the joint, and improves the patient’s quality of life so that he or she can work and live well during his or her lifetime. Currently, more and more patients are happy to accept the suggestion of artificial joint surgical treatment. The problem of the longevity of the artificial knee joint is determined by two main points: the wear and tear of the joint and the loosening of the prosthesis caused by wear particles. Artificial knee joint material strength and wear resistance is after tens of millions of times of wear and tear experiments, high-quality imported artificial joints, in theory, can generally meet the patient more than 30 years. Currently used in clinical artificial joints and compared to twenty years ago has improved a lot, I believe that the current artificial joints placed in twenty years, continue to be able to use more than 95%. Successful artificial joint replacement surgery can enable you to live pain-free and fulfill your daily activities, and no other treatment can achieve the same effect for the knee joint that has been destroyed. Of course, the longevity of the artificial joint is also related to many factors, such as the amount of exercise the patient does, the choice of prosthesis, the surgeon’s surgical technique, and his or her own condition. The orthopedic community is currently working with engineers and material scientists, among others, to continually improve artificial joint materials, processes and surgical techniques. The future is bright for patients who choose joint replacement to improve their quality of life and want to be healthy and pain-free.