Eight weeks: It will take eight weeks to heal and two more weeks to do functional rehab. If it is a true grade three the swelling will last 3 months. I treat grade three ankle sprains with a cast for 7-10 days, and then an agressive rehab program. They should be taped to resume athletic activities.
Answered 9/28/2016
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3-6 months: This is a severe injury. Early immobilization in a cast or "boot" is important. Non weight bearing is helpful until you can ambulate pain free. A comprehensive rehabiliation program is important to prevent repeated injury.
Answered 3/13/2013
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