Any surgery creates scar tissue.
Since you have had one surgery before why "spot" treat it?
Get to the root of the problem.
But, you have to see the correct physician's and have the correct diagnostic work-up.

I have a local friend who has had numerous shoulder and elbow surgeries by an ORTHO and still has serious issues. She won't even think of going to a Neuro cause she likes her ortho and won't look beyond her nose of the actual condition. She just keeps having surgery after surgery. Some people, just as patient's just won't listen or choose not to.

Did you know 99.9% of ALL Carpal Tunnel Syndrome cases are actually caused from the cervical or thoracic area nerve compressions? It doesn't mean you don't have CTS it means the base of injury is from the one of the swamp areas that get compressed.

Get your self to an expert...
If it's bone, go to an ortho
If it's nerve, go to a Neurologist
If it's vascular, go to a Vascular surgeon