last year I had a chick that got stepped on by one of my horses. It broke the knee joint. I splinted the leg as best I could and he hobbled around with it after a period of getting use to it. But I had to secure the top parts of both legs together to keep that bum leg from going to the side rather than in a natural gait. I found that by doing that, it kept the bum leg in a natural stance. Perhaps you could try that. I now have a grown hen with a broken leg. It is broken clean thru but it is broken below the kinee and above the foot. Much better at splinting. She is healing in a nice roomy cage with a good view of all the daily activity.
Jan
Jan