Hey y'all it has been a while since I posted here but I have a problem. My doberman tore something in his knee at the end of 2011. I have had my vet look at him twice and got two sets of xrays. He was almost 100% that something in his knee was ripped or torn. I am in no position economically to get surgery so I decided to keep him as immobile as possible. He has had his ups and downs but for the most part was doing alright. I just started taking him on really short walks about a week ago. Well this morning we were out in the backyard and he had a spurt of energy and went running around. He all of sudden picked up his back leg (the bad one) which is something he hasn't done in a while. When he tried to use it, it made a popping sound and he just stopped. Now he won't move at all and I had to help him to lay down. I'll called my vet and am waiting for him to return my call...but I am freaking out. I have no idea what just happened.