Hydronephrosis of the knee is synovitis. Belonging to synovitis of knee joint. Synovitis is a specific manifestation of many diseases (such as trauma, hyperosteogeny, tuberculosis, joint degeneration, rheumatic diseases, pigmented villous nodules, surgery, etc.). ) in synovial tissue. These diseases can stimulate synovium by mechanical, biological and chemical means, causing congestion, edema, increased vascular permeability, excessive secretion of synovial fluid and decreased absorption, thus leading to joint swelling, pain, limited activity and other clinical symptoms. If not treated in time. The synovium of joints is stimulated by inflammation for a long time.

, gradually thickening. And there is fibrous tissue, which causes adhesion and affects the normal activity of joints. So synovitis is not a disease, but a common manifestation of many diseases. The synovium of the knee joint is the most extensive and complex in human joints, and it is also the largest synovial cavity. Because the synovium of the knee joint is extensive and located in the superficial part of the limb, there are more opportunities for injury and infection. Therefore, synovitis is often manifested as synovitis of knee joint in clinic. The occurrence of synovitis is the result of the interaction between internal and external factors. The internal causes are mainly deficiency of liver and kidney, weakness of bones and muscles: spleen loses health, water and dampness do not melt, collaterals are blocked, phlegm and blood stasis block, trauma or traumatic injury, or wind-cold attack, or long-term strain, or pathogenic virus infection. Internal and external factors interact with each other, leading to stagnant water in bones and joints, impassable collaterals, dystrophy of muscle joints, swelling and pain of joints, and repeated attacks.

It is suggested that it is best to use topical drugs, such as Qiuyitang Huoxue Jin Shu Ointment, which can relax muscles and tendons, promote blood circulation, reduce swelling and relieve pain, promote blood circulation and remove blood stasis, and dispel wind and cold. The plaster has strong local permeability, and the drug molecules are absorbed by the skin to participate in blood circulation and reach the affected area, and then transmitted to the meridians and bones through the skin, which stimulates the regulatory function of the body, thus improving the blood circulation of joints and surrounding tissues, protecting synovium, improving nutritional status, reducing inflammatory exudation and promoting. Promote functional recovery and achieve the purpose of cure.