I would ask for a new MRI to compare with the old results. Just in case something new or treatable has occurred.

If you do a desk or repetitive job be aware of your posture, is head /shoulders rolled or hunched forward of the body?

Some of your symptoms could be related to thoracic outlet syndrome (TOS for short).
But the MRI may clarify if it is the spinal issues causing most those arm/hand symptoms or not.

You may also want to post this on our Spinal forum -
http://neurotalk.psychcentral.com/forum22.html

Or visit our TOS forum if possible repetitive/desk job related -
http://neurotalk.psychcentral.com/forum24.html