The knee is a large and complex flexor joint with a stable and flexible structure, but it is also susceptible to injury due to the high stresses it is subjected to, and knee pain occurs from time to time. However, this pain is often overlooked or arbitrarily attributed to knee osteoarthritis. In fact, there are many causes of knee pain. Here, we will analyze the causes of knee pain in detail. Common causes of knee pain 1. Knee osteoarthritis: This condition is mostly seen in the elderly, mostly women. Due to changes in bone structure, composition, resulting in degenerative changes in the bone, the body in order to maintain normal physiological structure and function, bone protective proliferation, proliferation of bone spurs may stimulate the muscles, ligaments, blood vessels, nerves, etc. and lead to injury and pain. 2, peri-knee ligament injury: may be caused by trauma or chronic strain injury. Since the stability of the knee joint is relatively poor when it is slightly flexed, if it is suddenly subjected to external force resulting in valgus or inversion, it may cause medial or lateral collateral ligament injury. Medial collateral ligament injuries account for the majority of clinical cases. 3. Fat pad strain: The fat pad fills the gap at the front of the knee joint and has the effect of strengthening joint stability and reducing friction. It may be due to trauma or long-term friction that causes fat pad congestion, hypertrophy and inflammation, and adhesion with patellar ligament, thus limiting the knee joint activities. 4, traumatic synovitis of the knee joint: due to trauma or overstrain and other factors that damage the synovial membrane of the knee joint, a large amount of fluid will be generated, so that the pressure in the joint increases, if not eliminated in time, it is easy to cause joint adhesions, affecting normal activities. The most obvious feature of the pain is that when the knee joint is actively and extremely straight, especially when there is a certain resistance to do knee extension movement, the pain in the lower part of the patella will increase, and the pain is also significantly increased when it is passively and extremely flexed. 5, meniscal injury: Most often seen in athletes, when the lower extremity is weight-bearing, the foot is fixed, and the knee is slightly flexed, if there is a sudden excessive internal rotation and knee extension or external rotation and knee extension, it may cause a meniscal tear. 6, free body in the knee joint: the patient’s leg is beaten soft or has a feeling of joint jamming, and there is an abrasive sound under the patella. 7. Pseudogout: More male patients, mostly in the knee joint. X-rays show calcification of meniscus and articular cartilage surfaces. 8, rheumatoid arthritis, ankylosing spondylitis, rheumatoid arthritis. 9, other: such as cold, bad walking habits, improper exercise, etc. Pain specialist for knee pain special treatment methods 1, oral drugs: for relatively mild patients, you can choose to take oral non-steroidal anti-inflammatory drugs to control inflammation and relieve pain; in addition, you can also take oral glucosamine capsules for knee joint “supplementation”. 2.Block therapy: For patients with moderate to severe pain, in addition to oral medication control, we also use anti-inflammatory and analgesic liquid formulations to inject the corresponding pain points or knee cavity injections according to the severity of the patient, often receiving very good results. In addition, for patients with osteoarthritis of the knee, intra-knee cavity injection of sodium glassate can also be considered to delay the onset and better control the symptoms. 3.Silver needle therapy: For patients with moderate to severe knee pain, especially for patients with soft tissue pain around the knee joint, silver needle release therapy can be used with remarkable results. 4.Extracorporeal shock wave therapy: We introduced Sonothera extracorporeal shock wave pain treatment system, which has the advantages of slight injury, short treatment time, and no special follow-up treatment, etc. It is effective in many kinds of knee pain. 5.Acupuncture therapy: Small acupuncture knife relaxation therapy is effective in knee pain such as ligament disorders around the knee joint.