How many days should you use crutches if you sprain your ankle?

Yes as when you have a sprained ankle you can't put pressure on your foot if your foot is severly sprained. I would recomend getting crutches but (if you don't want to wear crutches you can wear an ankle brace where you can get from any store) only use them for about 3-7 days and start trying to walk and do muscle exercises. You can get crutches from a pharmacy/drug store. Hope this helps.