As I understand it, if the stricture is due to scarring, rather than resecting the intestine, IF the stricture is NOT too long, they
open the strictured area at the site and then "sew" the two slit sides together sidewise rather than lengthwise which gives a widened area at the site.
In the early days for an actual resection they sewed the intestines back together end to end. Then as experience progressed they began doing resections by sewing end to side and now they are doing at least some resections if not all as side to side.
It is also my understanding that if resection for an obstruction is due to scarring w/no active disease present at the site at the time of resection tends to extend remission longer than if the resection has to be done w/active disease present at the site at the time.