Weakness in both knees, swollen and painful joints, and sometimes painful to the extent that it is impossible to walk …… With the arrival of aging, human bodily functions degenerate, and the untimely arrival of joint problems is a serious problem in the lives of the elderly. Knee pain is the most common manifestation of senile degenerative osteoarthropathy of both knees. Through reasonable treatment and daily health care, it is entirely possible to improve the symptoms and eliminate the pain. However, if treatment is not provided in a timely manner or if the disease is avoided, the course of the disease can be greatly delayed, resulting in serious consequences. The orthopaedic department of Shanghai Tenth People’s Hospital visited the sisters three years ago because they were suffering from knee pain, and X-rays showed that both sisters had severe inversion deformity of the knee joint. Surgery was recommended. Although the condition was diagnosed, when they heard the word “surgery”, the elderly had doubts in their minds and were hesitant about the treatment plan given by the doctor. A week later, her 73-year-old sister was admitted to the hospital for surgery because she could not stand the pain, and when her 75-year-old sister heard that her sister was going to have surgery, she rushed to the ward despite the pain in her own knee and repeatedly persuaded her sister not to have surgery because she had heard that many elderly people were completely paralyzed after knee surgery and had difficulty even getting down to the ground, not to mention walking freely. However, her sister trusted her doctor’s diagnosis and modern orthopedic surgery techniques more than her sister’s hearsay, and resolutely underwent the artificial joint replacement surgery. The surgery was ultimately a success and the results were very satisfactory. Just three days after the surgery, the sister was able to walk freely on the ground and the pain in the joint was gone. Although she envied her sister’s good results, she was afraid of the surgery because of the rumors about artificial joint surgery. As time went by, her condition was delayed again. While my sister traveled around with her children to enjoy her life, she stayed at home on crutches, in pain and helplessness. Due to joint pain and reduced activity, the old sister unfortunately developed diabetes, and a year later suffered a cerebral infarction. When the cerebral infarction symptoms improved, the knee pain intensified, and the sister fell and fractured her femur. After a few tumultuous moments, she finally found Professor Zhu Yuchang of the Department of Orthopaedics at the Tenth Hospital in a wheelchair, accompanied by her children. Although her health condition was not good, Professor Zhu admitted her to the hospital, seeing her expectant eyes. After a thorough pre-operative examination and adjustment, the medical staff of the Department of Orthopaedics of the Tenth Hospital finally completed the surgery successfully and her condition gradually began to improve. Now, her sister is staying in the orthopedic ward of the Tenth Hospital to receive a series of follow-up recovery treatments. She says to everyone, “You must treat your knee disease as early as possible and have surgery when you need it. Don’t be like me and put it off again and again and suffer so much for no reason.” Expert tip: Knee joint disease in the elderly should be treated early Most knee joint pain in the middle-aged and elderly people is primary osteoarthritis. In addition to the aging of the joint itself, joint overwork and wear and tear, and the usual knee activities too little, poor blood circulation, cold and moisture and obesity and other factors also have a close relationship. The knee joint is the main weight-bearing joint of the human body. As we age, the mucus secretion in the joint cavity decreases, the articular cartilage dries out, gradually wears out and thins, and the joint bone proliferates, coupled with the physiological atrophy of the muscles around the joint and the weakening of ligament elasticity, the mobility of the knee joint gradually decreases. With the development of the disease, there may gradually appear pain from movement, weight-bearing pain, pain without activity, pain at night, and pain at rest. Pain may be aggravated by excessive activity or changes in weather. The knee joint may become deformed, or the joint may become swollen due to joint effusion. X-rays may show narrowing of the joint space, unequal width or loss of the inner and outer space, formation of bone spurs at the edge of the intercondylar ridge and inferior patellar bone, and individual intra-articular free bodies. Depending on the condition, different surgical methods such as arthroscopic or open bone removal, free body removal, meniscectomy, joint debridement, joint fusion and artificial knee replacement should be performed.