Hi Jax,
Yeah the only reason they look inside the anus during LIS is for inspection purposes - the incision point is external but very close to the opening. I personally had no stitches however i know of others who did.
The pain post surgery can be both the fissure and the incision site - for me the only discomfort (not pain) i endured post-surgery was a little soreness from the the incision point but it was hardly anything.
I think the high sphincter resting point is something you have always had and i dont believe anything we do actually contributes to it or makes it worse. My father had a similare thing so i do know if it is something in my family.
I am only 2.5 weeks post surgery at the moment but feel i can probably start running/exercising in about two weeks time providing i dont strain myself (This is one of the questions i intend asking at my post surgery follow up next week)
According to my LIS discharge notes i could start driving within a few days after surgery however living in Central London means i have no need for a car
Davo