So the other day my brother sprained his ankle bad enough to go to the doctors to make sure it was ok. So as they do with most people they gave him the air caste for his ankle. While we were purchasing the brace, which was mostly paid for by insurance, i saw that they had aso ankle braces. Has anyone ever been prescribed an ASO ankle brace from the doctors? i figure that the doctor knows the difference between a chronically weak ankles to people acting like they do. Or has anyone just asked the doctor to prescribe them one? Thanks for your thoughts and comments.