Bone effusion can usually be minimally invasive surgery; if the patient’s effusion is small and the symptoms are not obvious, it can also be treated with medication under the guidance of the doctor. Bone effusion refers to the joint cavity fluid, may be due to bacterial infection caused by arthritis, rheumatoid arthritis and other conditions; patients can be advised by the doctor under the guidance of the use of arthroscopy minimally invasive surgery, to the joint cavity for treatment; patients can wear knee pads to protect the affected area after the operation, which is conducive to the treatment of the disease. Patients with less bone effusion can be treated with medication such as ibuprofen, celecoxib capsules, etc.; patients should avoid getting water on the wound after the surgery to prevent septic infection; try to avoid high-intensity exercise, excessive exercise, prolonged exercise, etc., and do some stretching exercises to fully relax the muscles to prevent the emergence of venous thrombosis. It is recommended that patients go to the hospital for treatment in time; pay attention to rest and go to the hospital for rechecking in time.