This is very interesting discussion and was never addressed before. I think that physical pain in extreme can cause loss of libido to any human being. Now , we have to take care and read this article in detail. ED was associated more with EXTERNAL sphincter problems - not internal one that is cut during the LIS. So men who had damaged EXTERNAL sphincter due to fistula surgeries and had incontinence also had cases of ED. ED is very complex phenomenon and in many cases could be caused more by emotional stress than by anything else (prostate problems aside and other health issues or medications that CAN effect erection quality).
At the end, almost all man who got rid of fissure after LIS did not have any problem with ED, but obviously those that did still had a fissure and had to deal with pain on daily bases.
Kimmy-boy - happy to hear you did not have problems ; ), and it looks that none of our male population here did !!! Actually, most just could not bare the "waiting" period to get well and restart their dating and sexual activity. The biggest frustration for our male boardies was actually being in "romantic" mood and not being able to find a partner due to limitations active fissure puts on ones social life !!!
So, you were more correct than wrong about ED and fissures and LIS and I also think that emotional part was to blame for possible ED cases
unless the external sphincter was damaged and BCM lost support
, OR erection and sexual activity caused radiated penile pain.