Heal fast, Terry. I'm familiar with having one hand non-functional. At the age of 39 I managed to cut the big nerve in my middle finger and ended up with microsurgery to reconnect it. I was in a cast for weeks. The result was good, though. I have feeling in that finger again, although it tingles every now and then, but that's better than having a numb finger for the rest of my life.
With luck, your therapy will be successful and you'll be as good as new.
Nan