• Patients must be at least 18 years old

• Patients who are mentally competent and able to understand all study requirements

• Female patients of childbearing potential willing to use appropriate methods of contraception

• Patient has symptoms of urge fecal incontinence with a disease duration of at least 6 months and did not improve sufficiently by conservative treatment performed for at least 3 months

• Urge fecal incontinence episodes that occur more than twice a week

• Maximal incremental voluntary squeeze pressure (increase to resting pressure) on anal manometry is 100mmHg or less in women and 150mmHg or less in men

• 9\. Ultrasound of the anal canal showing intact external anal sphincter or a maximal overall extent of external anal sphincter injury and tear of 180 degrees