Severed or damaged 4th intercostal nerve? Can it be surgically repaired?

After BA 4 yrs ago right nipple & skin around it has been numb. Now 8 days post explant & getting tiny bit of feeling in nipple, but surrounding skin above, below & to right of areola does not react to cold, heat, anything. The sensation I do get is one of pressure and discomfort. Is this something that will reverse or get better gradually with the implants removed? The BA was 425cc Silicone HP Mentor Under the muscle, and I was a 32D to begin with before the BA.

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