Many people suffer from knee pain. Knee pain is associated with many joint diseases, including synovitis, which is a common joint disease. Joint Structure: Synovium Synovitis occurs mainly in the joint area. The human joint is made up of two or more bone ends, which are covered with cartilage. The joint is surrounded by the joint capsule, which has an outer layer of fibrous tissue, and an inner layer of tissue, which is very thin, called the synovium. Synovitis disease has a lot to do with this very thin layer of synovial membrane. The synovial membrane is a very thin layer of tissue, but it is very useful in maintaining the normal function of the joint. A normal synovial membrane secretes a small amount of fluid, which acts as a “lubricant” and makes the joint surface more slippery when it is worn, preventing joint damage. However, for some reasons in life, such as osteophytes, joint degeneration, joint injury, joint strain, etc., the synovial tissue becomes edematous and congested, which leads to excessive secretion of synovial fluid, but very little synovial fluid is absorbed, resulting in pain and limited movement in the joint, which is clinically known as synovitis. The knee is the joint with the most synovial membranes, the largest joint surface and the most complex structure. Because the synovial membrane of the knee is extensive and located in the shallow part of the limb surface, it has more chances to suffer from injury and infection. The main symptoms of synovitis are congestion and swelling, joint pain, joint dysfunction, joint effusion, squatting difficulties, and muscle atrophy in some patients. In addition, the pain of synovitis can worsen after exertion or after catching a cold. Patients with synovitis must go to a regular hospital in a timely manner for detailed diagnosis and treatment, and after treatment must avoid straining and pay attention to keeping warm. The most important thing to do is to prevent synovitis, and once the symptoms of synovitis appear, such as joint pain, swelling, and limited movement, you should be alert to synovitis and go to a regular hospital for detailed diagnosis and treatment to avoid serious consequences. The actual fact that the body is in parallel with the ground when swimming, so it is not weight-bearing to move the muscles and joints, and long-term adherence to swimming can exercise the flexibility of the joints and help prevent synovitis. 2, slow walking slow walking because of the slow activity, can be good to avoid the knee joint bone surface impact, to avoid synovitis, and, slow walking is good to keep the mood, the disease also play a very good prevention effect. 3, cycling For synovitis patients, cycling is also a good exercise method, it is worth noting that the cycling speed must be slow, cycling time must not be too long, otherwise it will not achieve good exercise effect.