The top 5 treatments for knee effusion include: 1, non-steroidal anti-inflammatory drug therapy. Most knee effusion is due to aseptic inflammation leading to synovial hyperplasia and increased secretion of joint fluid, resulting in swelling and painful joint cavity effusion. NSAIDs are available in oral and topical forms, represented by oral Cilpro or topical Fotarol. 2, hormonal drug therapy, hormones have a very strong anti-inflammatory effect, if the knee effusion caused by non-infectious factors, short-term small doses of hormones can safely and effectively control inflammation. 3, joint cavity aspiration therapy, in the case of severe joint cavity effusion, can consider aspiration therapy, can quickly relieve the pain due to If the cause is not clear, joint fluid extraction may be very easy to relapse. 4.Minimally invasive arthroscopic surgery, if the synovial hyperplasia in the joint is serious and the diagnosis of synovitis is clear, minimally invasive arthroscopic surgery can clean up the fluid and prevent recurrence. 5.Treatment for the original disease, if it is septic arthritis, antibiotic treatment is needed; if it is If it is gouty arthritis, it needs to lower uric acid treatment; if it is rheumatoid arthritis, it needs anti-rheumatoid drug treatment, etc.