Does anyone know if he had more procedures done to the knee in the past several months?

I can't say that I heard that he did. To me, that's encouraging if he didn't. With of course the chance that there's nothing more to be done, and whatever is going on is permanent.... which means limited availability. But the Rams aren't going to place much stock in a guy if they already suspect or know that he won't be able to play much. And it's not like there's any reason to hide it. He was a mid round pick.