Surgery is a treatment of last resort for every patient. So is the doctor. Those who can be treated conservatively do not take surgical treatment. However, when the disease is so severe that the medicine cannot reach it, surgical treatment is needed. For this reason, I will talk about the specific indications for surgery. I hope that friends who need to understand. I. Symptoms: pain, for patients from the onset of pain, pain is accompanied by the beginning, the pain is light, by taking drugs, or through rest, weight loss, physical therapy, will be able to reduce pain. As the disease progresses, the pain becomes more and more severe. Gradually prevented normal walking, walking distance closer and closer, walking posture also began to become abduction, appear limp or wobbly gait, and even the old people jokingly called each other “iron crutch Li, iron crutch Zhang” and so on. The quality of life of the patient is seriously affected. By this stage, the patient’s psychological burden is also very heavy, insomnia, anxiety. The first thing the patient thinks about in daily life is: if I go out to buy groceries or go downstairs to take the car, will I be able to walk? Even if I can reach my destination, will I be able to come back? A further consideration is, if I am in this state of life, even if I don’t go downstairs and become a geek, how long can I maintain this state? If I need someone to take care of me, who will take care of me? My partner or my children? Will the children have time to take care of me? Will my partner be able to take care of me? If I have one child, the situation is even more difficult. Serious realities plague the patient. I once treated an 84-year-old patient with a femoral neck fracture, who kept complaining of knee pain after the artificial hemi-arthroplasty, and who felt that there was hope that the pain would be relieved if he went to the hospital. I told them that the best treatment was to give them morphine. I told them that the best treatment was arthroplasty, which could relieve the pain, but the patient’s body could no longer tolerate the surgery. Had to come to the hospital to receive surgery. When I thought about the current situation, the presence of a femoral neck fracture had a lot to do with the patient’s inability to get off the floor and aggravate osteoporosis. I couldn’t help but think of my friend’s mother, who was in her 60s and needed to be taken care of by her partner because of severe knee pain, so I performed bilateral knee replacement surgery on her, who had been hospitalized since last year. Although the children are very filial, but helpless on a brother, work, family, children need him. At this time, the elderly woman has become the main force of the family, in turn, to take care of her partner, accompany the elderly to chemotherapy and comprehensive hospital treatment, and most gratifyingly, went to Singapore together in early winter last year to visit her grandson who is studying abroad. My friend also said many times that it was thanks to the timely arthroplasty of the old man a few years ago. These two cases had very different outcomes due to the different ways of dealing with pain. Second, in terms of physical signs: joint movement was limited. Due to the pain and the destruction of the articular cartilage, the patient’s joint range of motion became less and less. The situation of not being able to straighten and bend. Walking with bent knees and stooped back, not being able to get up from the toilet zun, zun down. Even the opposite wall needs to press the handrail or bolt the rope to provide assistance. Walking is becoming more and more difficult. The weight also increased month by month, but the bone mass became osteoporotic month by month. Due to the osteoporosis, the patient complained of general discomfort all day long. All kinds of calcium supplements have been tried, but to no avail. Going up and down the stairs or sitting up from the chair may produce severe pain. At this time, dealing with the diseased joints can also improve the patient’s quality of life, and the difficult situation of old age can be alleviated. In summary, when pain or limited joint movement affects your life and work, do not wait, you may need an artificial hip or knee replacement.