previous Hernia surgery could be one of cause
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If pinching is the only isolated complaint you are having then it could be likely to be due to hernia surgery. There could be entrapment of never due to hernia repair
and sometimes it could present with pinching symptoms either immediately or few years after surgery.
At the same time Its not advisable to just attribute it to past Hernia Surgery. It's advisable to see your Physician for further clinical examination and assessment of your complaint in order to avoid missing something.
Do get back to me if you need any further assistance, will be glad to assist you.
Dr T Shobha Deepak