The causes of knee joint effusion mainly include trauma, inflammation, chronic strain, bone and joint degeneration.
1. Trauma: When the knee joint is traumatized or sprained, there will be exudation in the damaged area, which will cause knee joint effusion, such as meniscus injury or ligament injury, patellar fracture will cause knee joint effusion, and the amount of effusion will not be exactly the same according to the degree of injury. The amount of fluid will vary depending on the degree of injury. The fluid will gradually disappear by repairing the damaged tissues.
2. Inflammation: Inflammation can also cause effusion, such as septic arthritis or tuberculosis of the joint cavity of the joint effusion. Rheumatoid arthritis can also cause joint effusion. Pigmented villous nodular synovitis can also present with bloody joint effusion.
3. Chronic strain: joint strain caused by squatting or walking too much for a long period of time can also cause joint effusion.
4. Osteoarthritic degeneration: joint hyperplasia and degeneration, joint wear and tear, followed by aseptic inflammation of the synovial membrane can also appear joint effusion.
The causes of knee joint effusion are many, you need to go to the hospital in time to identify the cause of the disease and targeted treatment.