I haven't used these, although I know handicapped pets has good quality items.
Buddy had a made to order hock splint that helped him. I bought it from www.dogleggs.com
You measure and they make their products to order, too. You might want to check them out.
Sienna is beautiful!
With approval of my friends:
Seiko, Solo, Sophie, Skye and Buddy - bridge dogs who taught me so much