Foot sprain 6 years not well may be caused by ligament injury, cartilage injury, traumatic arthritis, should be based on the specific cause of treatment, treatment methods include physical therapy, drug therapy, surgical treatment and so on. 1. Ligament injury: foot sprain for 6 years, may be torn ligaments at that time, there is no surgical repair. Repeated activities lead to edema of the damaged ligament and pain when walking, you can take ibuprofen extended-release capsules to relieve the pain, or surgical treatment. 2. Cartilage injury: physical therapy such as magnetic therapy and ultrasound can be carried out to improve blood circulation in the ankle area, and surgery is needed for serious cases. 3. Traumatic arthritis: It is osteoarthritis that occurs after joint injury, and there may be hyperplasia of bone. It is characterized by limited movement and pain. Sodium hyaluronate can be injected to lubricate the joints and relieve pain; surgery can be performed to remove the bone capillaries and reduce pain. Sprained foot for 6 years did not get well may have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, to give targeted treatment or treatment. The above drugs are recommended to be used under the guidance of a doctor.