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Options after open triple neurectomy + meshoma removal
It is unfortunately a known risk of neurectomy, that is neuroma formation or nerve-type pain after the transection.
If that is indeed the cause of chronic pain, then re-excision is an option. Other lesser options also exist, such as nerve stimulation and cryoablation/alcohol ablation.
The re-excision technique depends on the other needs you may have and may be performed in open or laparoscopic manner. There are risks with the laparoscopic technique including abdominal wall laxity and denervation.