I can tell you in my case, I started having adhesions from 28 years of chronic appendicitis which ruptured 3 years ago. The infection from the chronic flare ups caused adhesions--the bowel stuck to the back of the pelvis, the uterus stuck to the bowel, etc.
After appendectomy, had more adhesions with a peritoneal cyst as a result of that surgery.
Hope this info helps.
-- Kathy L.