if scar tissue is encasing a nerve causing numbness and its been 5 years already dealing with this numbness. if i some how do surgery or an injection to get rid of the scar tissue is it possible i can get my sensitivity back?

im going to ask my neurologist to see if i can get a MRN to see if i can see the nerve. i talked to a lady at the mrn center and she said its 50/50 that the mrn will even find the problem, because their so many blood vessels in that area, so the nerves would be hard to see.