SID Magazine reported -
Accident on the Set::
THE YOUNG & THE RESTLESS' fans will soon notice Billy sporting a cast on his hand. But this isn't a prop -- his portrayer, Billy Miller, actually broke his hand on set! "There was a big scene -- and I got really into it, and broke my hand," grins the actor. "It was a good scene. It wasn't smart, but for the [scene] it's as close to truth as you can possibly get, and I guess that's what you strive for. I wouldn't recommend it, though. I shattered my knuckle and broke my hand."
Miller proved to be a trooper, though, noting, "I finished out my day, shot another couple of hours, and then went to the hospital. I had it reset. Fun times!" Because the injury actually works for the storyline, Miller says that the writers promptly wrote it into the show.