Trouble with LEFT foot

Sonel is having a problem with his left ankle. It's the one he hurt the other day. He will just be walking along and he sits down bawling and grabbing his foot. I think he is twisting it somehow. He wears high top shoes, but I've kept his walking boot on his left foot for a couple days for extra support (his ankle can't bend in the boot). I'm going to call Dr. DeHeer tomorrow and I'll keep you posted on what he says.