i know exactly what your talking about! i have also had [wiki2="Fistulas"]fistulas[/wiki2] and have had the plastic (or maybe rubber) loop in my butt lol. unfortunatly my abcess is very stubborn and i had to have the loop removed and a larger drain called a penrose in its place.
but as far as the removal of the thread, the surgeon can just cut the loop and then it slides out. it feels slightly weird but i dont remeber it hurting.
best wishes!
