 The join (or anastomosis) after surgery may be inspected, usually during a colonoscopy, and disease activity graded.The "Rutgeert's score" is an endoscopic scoring system for post-operative disease recurrence in Crohn's disease.Mild postsurgical recurrences of Crohn's disease are graded i1 and i2, moderate to severe recurrences are graded i3 and i4.