Autumn is slowly leaving and the weather is turning cooler. Middle-aged and elderly patients with chronic knee pain start to worry again, because knee pain becomes more intense in winter. So, why does knee pain suddenly get worse in the winter? Most middle-aged and elderly patients with knee pain are often patients with osteoarthritis of the knee, a degenerative disease of the knee joint, also known as degenerative knee osteoarthritis and age-related knee osteoarthritis. The main clinical manifestations are slowly developing joint pain, stiffness, joint swelling, localized pressure pain, limitation of movement and joint deformity. The pain in the knee joint often occurs in the morning. After a small amount of activity, the pain in the knee joint is reduced, but if there is too much activity, the pain will increase again. The knee joint is often stiff and limited after prolonged periods in a certain position. Examination of the knee joint may reveal joint swelling, localized pressure pain, and a sensation of friction or “clicking” when the knee joint is flexed and extended. For patients with osteoarthritis of the knee, the most difficult part is walking up and down stairs, when the pain in the knee joint is significantly worse. In severe cases, patients may be unable to walk on level ground due to increased pain. When winter comes, the alternating warm and cold temperatures and the big temperature difference between day and night cause the muscles and blood vessels of the whole body to contract. The blood vessels that nourish the knee joint are fewer and the blood circulation in the knee joint is poorer, resulting in the knee joint itself being less capable of regulating temperature, and the muscles and fat around the knee joint are less distributed and weaker in protecting the knee joint, making it more susceptible to the effects of cold and making patients with osteoarthritis of the knee joint feel increased pain in winter. Therefore, it is recommended that people with knee pain should pay attention to keeping warm in winter, avoid long-distance running, hiking, climbing stairs and other activities that require frequent twisting of the knee joint, and promote blood circulation to the knee joint by walking back and forth appropriately to relieve knee pain. How to get rid of the “clutches” of knee pain The treatment of chronic knee pain is mainly divided into systemic medication, nerve block therapy, radiofrequency therapy and physical therapy. Systemic medication is easy and convenient and can be administered orally, rectally, intramuscularly or intravenously, but there are more side effects due to systemic medication. Systemic medication should be chosen according to the nature and degree of pain, the correct drug, method of administration and interval, and “on-time medication” is better than “on-demand medication”. In case of drug tolerance or poor efficacy, the drug can be adjusted or additional doses can be administered. The drugs commonly used in nerve block therapy are local anesthetics, glucocorticoids, and vitamins. In addition, acupuncture medicine has made a qualitative leap in the understanding, diagnosis and treatment of diseases (especially painful diseases), and the micro-innovation therapies of Chinese medicine such as acupuncture and sharpened needles guided by this theory have realized five major changes in treatment means and efficacy, i.e., changing a large number of difficult diseases from incurable to curable; changing difficult treatment to quick cure; changing complex treatment to simple treatment; changing open surgery to closed surgery; changing injury The painful type of treatment becomes nearly non-invasive and painless. Acupuncture and sharpened needles cleverly integrate the advantages of acupuncture needles and micro-surgical instruments, which can enter the damaged muscle tissue in a nearly painless and non-invasive way to loosen, peel, unblock, contact muscle spasm, and release nerve compression. Because of the accurate and targeted treatment, the treatment is fast and quick, solving some of the unsolvable problems of past therapeutics and curing a large number of knee pains that are difficult to be cured by conventional methods. Radiofrequency thermal coagulation peripheral nerve destruction technology is based on nerve block therapy, a specific peripheral nerve will be destroyed by thermal coagulation after the treatment of pain technology. Radiofrequency is used to destroy the nerve by increasing the local tissue temperature at the tip of the needle. The method of nerve destruction by radiofrequency is reliable, and it can effectively block the nerve conduction to achieve the purpose of eliminating pain. In addition, radiofrequency thermal coagulation is a safe and effective method because of its accurate positioning and small damage. In recent years, the quality of ultrasound images has improved significantly, enabling structures that were previously poorly displayed to be clearly displayed, helping the operator to avoid damage to blood vessels and nerves. The continuous advancement of new technologies such as energy Doppler and color Doppler helps diagnose and differential diagnosis, and can provide high-quality real-time monitoring of the skeletal muscle system, especially soft tissue interventions, making the interventions faster, safer and more accurate. With the use of ultrasound probes, the neurovascular and soft tissue structures of the patient’s knee can be clearly observed, and most patients can be treated with radiofrequency therapy in 1-2 sessions with a total efficiency of over 95%. In addition, the common physical therapies used to treat chronic pain are electrotherapy, laser therapy, acoustic therapy, magnetic therapy, shock wave therapy, etc. Patients can visit the pain department and after diagnosis, they can understand which method is right for them, so that they can get rid of the pain more effectively and quickly.