Thanks for the update Jim. One idea, if his other leg and upper body are still strong, you might look at getting a "knee scooter". BJ rented one when she broke her ankle and it gave her lots of freedom. It is pretty narrow and fits through doorways. It also has a brake on it in case you get going down hill and need to slow.
She hated the wheel chair, because she had to transition from the chair to the walker to get into the bathroom. With the scooter, she rolls right in.
Just a thought.
Still praying for your family and Joe.
Hay

Jimmyt