1) Which patients are suitable for artificial joint replacement surgery? At present, it is considered that joint pain and severe dysfunction caused by many diseases, except acute infectious diseases, active tuberculosis and hematological diseases, can be replaced by artificial joint surgery (the patient’s age is still an important reference factor), mainly including: (1) joint deformity or joint destruction caused by osteoarthritis; (2) ankylosing spondylitis; loss of joint function caused by rheumatoid arthritis; (3) (4) Loss of joint function due to infection including special infection; (5) Advanced aseptic necrosis of the femoral head; (6) Non-healing femoral neck fracture or delayed healing of femoral neck fracture in the elderly; (7) Joint pain due to congenital hip dislocation; (8) Bone tumors in and around the joint. (2) Why do I need an artificial joint replacement? When there are structural changes in the joint due to various reasons, it is not advisable to use medication alone because medication can only partially relieve the pain symptoms. Artificial joint replacement can be used for the following purposes: (1) Pain relief: It can relieve pain caused by various reasons, such as pain caused by rheumatoid arthritis, joint destruction, etc.; (2) Joint stabilization: It can stabilize joint instability caused by various reasons, such as old joint dislocation, severe knee instability combined with osteoarthritis; (3) Deformity correction: It can correct the joint deformity at the same time as the artificial joint surgery. (3) Correction of deformity: to correct the deformity of the joint at the same time as the artificial joint surgery, so that the original deformity can be corrected and improved; (4) Improvement of joint function: to restore the normal function of the joint that was stiff and limited in movement. (3) Duration and effectiveness of the artificial joint The joint has various functions such as walking, running, jumping and squatting, and it also carries the weight of your body. When a joint is diseased, the surface that was smooth like a mirror becomes rough or even defective, so you will feel pain, have difficulty walking, have limited movement, limp, and sometimes have difficulty doing even easy movements. When the above disease progresses to a certain level and the joint is destroyed, surgery is required. An artificial joint is used to replace the original damaged joint to restore functions such as walking. The greatest benefit of artificial joint surgery is that it eliminates 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. More and more patients are now readily accepting the suggestion of prosthetic joint surgery. Successful prosthetic joint surgery allows you to live a pain-free life, and for joints that have been damaged, no other treatment can achieve the same results. Of course, the longevity of an artificial joint depends on many factors, such as the patient’s exercise level, the choice of prosthesis, the surgeon’s surgical technique, and his or her condition. Currently, the orthopedic community is working with engineers and material scientists, among others, to continuously improve artificial joint materials, processes and surgical techniques. (4) Treatment after loosening of the artificial hip joint Once the artificial hip joint becomes loose, joint revision surgery is required. There are specially designed hip prosthesis and surgical instruments for the revision surgery. The revision surgery is more complex than the initial surgery and may require bone grafting, a different type of joint prosthesis or a special prosthesis. After revision surgery, the vast majority of patients can achieve a satisfactory outcome. (5) Protection after hip replacement After hip replacement, you need to develop good habits of life and activities to maintain the stability of the joint, and learn some simple rehabilitation knowledge and carry out joint rehabilitation exercises. You should pay attention to the prevention and control of infections, and you should actively treat infections such as tonsillitis, skin infections, tinea cruris, etc. After surgery, you can do exercises such as cycling, walking, dancing and swimming, but strenuous exercises such as running and jumping, as well as long-distance walking and climbing are not encouraged.