Another thing , since you mention possible surgery on wrist and elbow...
there is a thing called double and/or triple crush...
Basically it is TOS plus impingement at those other places too.

Don't agree to wrist or elbow surgery until you see a TOS specialist, in the past quite a few had ulnar and/or carpal tunnel surg then discovered they still had sx because it was TOS not carpal or ulnar..

All the nerves , as well as the blood flow, to arm & elbow have to run thought the brachial plexus area, so any compression, from bone, scar tissue, ligaments, muscles, and even poor hunched forward postures, can really cause many symptoms..

Did you find our Thoracic outlet forum and the sticky threads there?
You can post there if you want to get more information from the TOS forum members. Most tend to stay in their main forum topic and don't explore around.

I had many rsi related dxs at first because my sx kept moving around, and my GP wasn't familiar with TOS , I wasn't either at first ...but I found the forums and it all clicked for me then..