Let us know how Graham will get along with the PT. If it's the same as with humans, it will start with some gentle exercises to get the muscle back in his leg and make Graham more confident in using it. At least that's how it worked with my father after he was bedridden for a long time. It's hard work but I'm sure it's going to be worth it.

Good Luck Graham be a good boy and do all your excercised - you will be back to your old self in no time!