The average time of an ileostomy reversal is 35 minutes, according to a study cited in JAMA Surgery. Complications aside, the factor most affecting the length of surgery is the closure technique used.
Surgeons use ostomies to treat a number of serious intestine and bowel conditions, including Crohn's disease, cancer, diverticulitis, and damage resulting from injury, notes the Colostomy Association. In patients whose condition permits reversal, the wound closes in six to eight weeks, explains Memorial Sloan Kettering Cancer Center. After the reversal, patients avoid strenuous activity that pressures the midsection and slowly begin adding foods back into their diets. Impairment of bowel function following surgery is common and improves gradually over time.