Hello,

If it was me I would ask the Dr "what exactly did they find that shows TOS"?

what exactly is causing the compression to blood flow
why only the one finger affected? - unusual
extra cervical rib?
one side involved or both sides?


Do you have any other symptoms in your arms, or neck, or shoulders like you've read about here?

If you have a blockage, or compression by something that shows very clearly on imaging then a diagnosis is much simpler.

Many of us have a chronic form of RSI that is mostly soft tissue based ,with sticky fascia that adheres to the various muscles & nerves or blood supplies and after time hardens or causes scar tissue. A very very brief & simplified synopsis.
Most of the soft tissue problems won't show up on imaging.

Be very sure to check out the surgeon if you opt for that- skill & experience is key.

but I am very curious why the one finger showed the symptoms like it did..