My xrays are basically normal. I've had 3 chiros and 1 vascular surgeon look at the xrays and none them found a smoking gun or had any major concerns. So no cervical ribs or deformations.

One of the chiros really stared hard at my TOS side in the xray and thought I had minor hints of things like elongated transverse process, or whatever it is. He could have been right or he could have been seeing what he was looking for. Even so, he wasn't concerned.

I believe my problem sources are:

-- muscle tension (improved now)
-- stress (improved now)
-- posture (pretty much fixed now)
-- hypertrophied upper traps (not improved)
-- And then the negative feedback loops that kick in. I mean once your circulation goes to hell and/or pain sets in, you get more stressed and more tension. You could even get more muscle tension from reduced circulation, in my experience.

Until I learned about TOS last year, I didn't know I had a rib in my neck!

The movement is minor. Like millimeters, but the blood vessels are small, so uncompressing a couple of millimeters could mean a major % increase in blood flow over the baseline of when the vessel is compressed.

Something I read pointed out that all of your blood vessels and nerves are softer than all of your muscles, tendons, ligaments and bones. Therefore, we see these problems with neurovascular compression.

Anyway, search google and youtube for "first rib adjustment" and you'll at least find the active adjustments done by PTs, chiros and osteopaths. With some digging you should find some of the self adjustment ones. Interesting stuff.