Last year I had similar problem with a chick. I did normal leg brace but I also opened up a couple capsules of vitamin E, I helped her get most of the liquid and by next day she was better.. good luck
I recently had a baby chick hatched with its neck cranked so far down it kept rolling over forward. So this is how i fixed this little chick. I got a capsule of vitamin E and squeezed the liquid out so it could eat it, and it ate it right up. It was within 24 hours and the baby was back...