You could post it to !medicine, but please tag it as NSFW and keep the discussion focussed on the medical aspect of the procedure (it sounds like that was the intent).
This is a community for medical professionals. Please see the Medical Community Hub for other communities.
Official Lemmy community for /r/Medicine.
Also note that it’s only recently become the parallel community for r/Medicine, and there may be people subscribed who aren’t medical professionals and may not appreciate it (they may downvote it).
If you do find more medical communities then please share. I’d like to add them to the post on the Medical Community Hub