Ankle effusion is usually caused by ankle joint injury or ankle arthritis, and if it has not recovered for more than a year, you can under the guidance of a doctor for physical therapy, medication, surgery and so on. 1. Physical therapy: red light therapy and local hot compresses can be used to promote blood circulation and the absorption of the effusion, and the ankle joint can also be immobilized by wearing a brace to promote the absorption of the effusion. 2. Medication: Some non-steroidal anti-inflammatory drugs, such as diclofenac sodium and ibuprofen, can be used to relieve pain, and glucocorticoid can be injected into the joint to reduce swelling if necessary. 3. Surgery: If conservative treatment is ineffective, you can consider pumping out the fluid, and if necessary, minimally invasive surgery can be performed to drain the fluid. Ankle effusion for more than a year has not yet recovered need to consult a doctor in a timely manner, by the doctor to clarify the severity of the ankle effusion, choose the appropriate treatment, the use of medication please follow the doctor’s instructions.