Using a sling that includes a central portion and at least two arms extending from the central portion, a method of treating anal incontinence may include positioning the central portion posteriorly to the rectum and/or anus of a subject, and extending each arm of the sling to a respective obturator region. Using a sling having the same or similar structure, a method of treating pelvic organ prolapse may include positioning the central portion beneath the ano-rectum of a subject, and extending each arm of the sling to a respective thigh incision near the obturator region.