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There isn't enough information in your post to give you a good answer. I think it would help if you put in your post what you want to revise to and what your issues are that you need a revision.
Your records were destroyed since your surgery was beyond the time required to save them.
If you have a specific question for me, PM me or I will not see it, as I don't check responses on the forums and don't have anything forwarded to my email.