Pushing the envelope again!  This time I try a little upper body.  I try ring rows with an assist of grips on my wrist, which I theorize does not involve the hands.  Wrong!  This hurts.  I back off.

I also try pushing a 15-lb bar overhead multiple times using my immobilizer (splint) to balance the bar.  This seems fine.

I don't recommend these types of experiements without the involvement of a therapist and the doctor!