Hello, It s important to get the swelling in your ankle checked out by a medical professional, especially since you have a history of knee problems and surgery. The swelling in your ankle could be a sign of a blood clot or deep vein thrombosis (DVT), which can be a serious complication following knee surgery. Other possible causes of swelling in the ankle include inflammation from arthritis or a soft tissue injury. However, since the swelling is on the same side as your knee problems, it s important to rule out any knee-related complications. Some remedies that may help reduce swelling in the ankle include elevating the affected leg above heart level, applying ice to the swollen area, and taking over-the-counter anti-inflammatory medication. However, these remedies may not address the underlying cause of the swelling. I would recommend scheduling an appointment with your doctor or orthopedic surgeon to have your ankle evaluated. They may recommend imaging tests, such as an X-ray or ultrasound, to determine the cause of the swelling and develop a treatment plan. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. H. Kay, General & Family Physician