Tristan has been doing very well for the last 4 weeks. That is no to say he never limps, but his limp is considerably less than before his injection. His morning walks are virtually limp free as you can see from the video and he is quite spunky. The 2nd video is dark but it shows a bit of his enthusiasm in the morning at a time when his leg was usually quite bad. He will never be young again but I feel that this has added to the quality of his life considerably.