What causes abdominal adhesions?

Abdominal surgery is the most frequent cause of abdominal adhesions. Surgery-related causes include

cuts involving internal organs
handling of internal organs
drying out of internal organs and tissues
contact of internal tissues with foreign materials, such as gauze, surgical gloves, and stitches
blood or blood clots that were not rinsed away during surgery
Abdominal adhesions can also result from inflammation not related to surgery, including

appendix rupture
radiation treatment
gynecological infections
abdominal infections