you are right scarring in the natural thing a body does, but there is a few ways of minimizing the effects of scarring. One way it to use a medical material to wrap around the nerve so that the scar tissue cannot attach to the nerve. I have read about it on multiple TOS websites and have been talking to a Doctor in California who uses this method and uses a mri process that supposely shows the exact pinch point of the nerve.
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Dr. Filler uses anti-scarring materials that greatly reduce the risk of recurrence from scar formation
From his website here:
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