I have to agree that without nerves, all the pelvic floor exercises and penile rehabilitation exercises are useless. Look, muscles - all of them including the involuntary ones in the heart, intestines, lungs, etc are innervated - they REQUIRE transmission of impulses from nerve fibers for the muscle to function…PERIOD.
No nerves, NO muscular activity. Just think Christopher Reeve and you get it.
You can prep for surgery all you want, doing all kinds of pelvic gymnastics…If those nerves are removed or damaged beyond their ability to recover, you will be impotent, incontinent or both. I’d rather have a very lucky surgeon than a good one, and if you can get both you hit the freakin lottery.