I also have TOS, ulnar nerve and carpel tunnel. I've never had any operation for it. I use the lidocaine patches on my neck, as near my elbow as I can, and just above my wrists.

TOS often gets better on its on, due to muscle atrophy. That's a strange thing to count on though. (I was muscular when I got it, and my docs told me that body builders often bring it (TOS) on themselves.)

The biggest problem is with overuse or exertion of the arm and neck muscles.
Be careful!
Be well!

Pete
asb