Gosh what an ordeal!

So you have a thoracic level radiculopathy documented with imaging and there’s not a surgeon- orthopedic or neuro - who will intervene? Did they say why?

I have something similar but I think mine is a spasm instead of a knot when I twist around to either side - As in when I am trying to reach something behind the seat I’m sitting in. It really hurts and takes my breath away. I have to wait for it to pass. But it always does.

Responding to an old post, but it is coming up on search...
I've had this issue for years, having worked on a computer since the '90s. I finally found relief. Ask a P.T. to help because the position varies depending on location.
1. Therapist adjustment; Standing behind, they bend you slightly, hold the position and you lean gently into the curve. That was an absolute miracle, immediate relief.
2. Follow up with a stretch. Lying on the side of the muscle pain, place a pillow under the area (for me, it is the "bra" area,) and stretch for 2 minutes. The position has to be exact for this to work. Only once per day, or less in some situations.
Again, please have a PT guide you so it's in the right location and does no harm, but this now relieves the muscle tightness immediately. PT said the muscle was compensating for an issue on the other side and was likely pressing a rib.
3. Strengthening exercises targeted to that location come later...but really work after the stretch is correct!
It took almost 30 years to find this solution, and trying it on my own was a failure that could have been dangerous. I suspect it's from using the computer mouse for never-ending hours on a daily basis...poor posture in the end. I hope you can find a good PT who uses your MRI or other scan to find the exact spot and help you as well!