Honestly, I think you need to take up the pros and cons with the specialist. Let him explain it all thoroughly to you.
As for a pup pulling the leg up, I have never seen that happen with LP except in cases where they irritated it by jumping off of something and usually it clears up in a few days. The real reason some with LP end up pulling the leg up in pain is due to CCL tears which often happen with an unstable knee.
I guess I am not much help. I will keep you and her in my prayers...I am sure you will make the right decision.
