^I agree, writing can be very helpful.
I have a question, coming from my own experience with nerve damage and muscle spasms after my spinal surgery: is your uncle getting physical therapy? I realize that he can't do exercises on his own, but a physical therapist moving and stretching his legs might be very helpful. My PT helped my muscles spasms far more than meds ever did. Just a thought.
Edited to add this article about physical rehabilitation
that showed up online this morning. Fascinating! And cool timing.