Wishing you a smooth healing process!

I haven't used a kneeling walker, but I have had an injury where I had to re-learn how to walk. (A kneeling walker would not have been appropriate for my injury) Step one: practice shifting weight to my injured side. I would guess that's the point of the kneeling walker -- you can keep using your muscles on your injured side from the knee up, while the lower leg is healing. Hopefully the PT people will weigh in as well ...