I watched the videos you sent me at home last night. I have to say that Bernie's movement was like that for a split second but then the limping completely went away. Those dogs were limping the whole time while Bernie does not. I was interesting to see the Drawer test, I am wondering if a vet can actually mess up a dog's knee if he doesn't do it correctly? I am psyhoctic and I question everything so don't mind me lol I was playing around with Bernie's knee but I wasn't able to see that popping however I think I will try it again with better lighting tonight to see if I notice anything. I am assuming that the drawer test is the same test when they do the ofa knee test? I am getting the glucosamine tonight and I am going to keep resting Bernie. I don't have a good feeling about this whole thing, but the only thing that gives me hope is that Bernie doesn't limp after the fell. Once again thank you for your help :)