Ive done this on many occasions with both ankles as they are very weak, this last time i did which was Aug bank holiday weekend last year and it was a bad one, i went to a & e had x-rays which showed i had badly torn my tissue and ligaments, they straped it which i had to keep on for 4 days, gave me pills for the pain, im still to this day having problems with swelling and pain 5 months on, im under the hospital for excersize treatment to try to strenghthen the ankle up which i have to do weekly. Hope this helps.