One year of ankle injury with effusion may be caused by traumatic arthritis after ankle injury, or there may be other diseases in the ankle such as septic arthritis or tuberculosis of the ankle joint, etc., which should be treated according to the specific causes, and the treatment methods include general treatment, physiotherapy, medication, surgery and so on. 1. Traumatic arthritis: after ankle injury, if untreated or improper treatment measures, chronic inflammation can occur, leading to the occurrence of traumatic arthritis, which causes fluid accumulation, medication such as non-steroidal anti-inflammatory drugs (aspirin, acetaminophen, etc.) anti-inflammatory and analgesic, surgical debridement and drainage, arthroscopic cleanup if necessary, and ankle joint replacement if it is serious. 2. Septic arthritis: the pathogen directly invades the joints, mostly monoarthritis, which may be accompanied by high fever or chills. The puncture fluid in the joint cavity is purulent. Treatment includes: bed rest, use of analgesics such as ibuprofen, antibacterial drugs such as ampicillin, clindamycin and so on, can also be given to the joint puncture, immobilization of the affected limb and other local treatment. 3. Ankle tuberculosis: slow onset, long course, often with a history of sprains, the main symptoms of localized swelling, pain, joint effusion increases, pain aggravation, ulcerated pain relief. Anti-tuberculosis drug therapy such as isoniazid and rifampicin should be given, along with rest, traction braking, intra-articular can be given anti-tuberculosis drug therapy, and non-surgical treatment is ineffective, can consider lesion removal surgery and so on. Ankle sprain one year with effusion may also exist other causes, should be timely hospital consultation, under the guidance of the doctor for treatment, should avoid blind self-medication.