
you don't have to keep Del in the house, 2 or 3 half hour lead walks per day, and hydrotherapy once a week will help. Stairs are a big problem with poorly limbs on dogs, that and jumping onto furniture so prevent these as much as possible. It's being cruel to be kind long term!
Ask your vet to refer you to another specialist, once you have a second opinion you will know what your options are then.