I'm certainly sorry about your continuing pain Mark. I was wondering how the physical therapy has been going for you.
If there’s so much pain hopefully your dr. Supplies some relief.
I use the home remedy of a pillow between my legs.
And I agree about a media for your bridge which doesn’t expand nor contracts. Plexiglass could be your answer which means re engineering.
and I’m not joking about this, over the years I’ve found many times what supplies I needed in local dumpsters. I have salvaged signage from stores doing promotions which was made from thick plastic or plexiglass
Take care, hopefully the pain isn’t as bad this night.
