This invention proposes a system for reducing anal incontinence including a rectal sling (16) implantable in a patient. The rectal sling has a central portion (20) attached to at least two arms (18, 19) extending therefrom. The central portion (20) has a preformed curved shape that is wider than the at least two arms (18, 19) and which, after implantation, conforms to the external contour of the anus, rectum, ano-rectal angle and/or levator ani muscles in a patient.
