eveewonder, have you read any information on pain pumps or SCS?

It is another option for dealing with long term pain.
I don't know what kind of doctors you have been seeing , but if they won't consider surgery they should have told you about pain control alternatives..

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For discussion about medications and treatments for any disease or health condition, including issues of medication toxicity.
Sub-Forums: SCS & Pain Pumps - http://neurotalk.psychcentral.com/forum118.html

There is also various combo injections or botox, that might be helpful.

About the broken stent - I've read that the body will make collaterals to help carry the blood, when there is a need.
Something to ask your drs about if you want, or search for more info on that to perhaps ease your mind.