Icing the injury reduces swelling. The usual routine is to apply ice packs for 20 minutes at a time every hour or so for the first day after the injury, and thereafter as long as swelling persists. If swelling causes the bandage to become tight, it should be loosened immediately. Elevating the foot above the level of the heart minimizes blood pooling and swelling in the affected area. This should be done as much as possible during the first 48 hours after the injury.
Some people experience prolonged swelling.
This usually is caused by the formation of excessive scar tissue. The physician may request X-rays to check for small, previously undetected bone fragments or damage to the joints. With proper treatment, most ankle strains and sprains heal within 2 to 6 weeks. The most severe, such as those requiring the use of a cast may take as long as 12 weeks. A carefully monitored program of physical therapy may be required to restore full muscle balance and strength.