In cases where an episiotomy is indicated, a mediolateral incision may be preferable to a median (midline) incision, as the latter is associated with a higher risk of injury to the anal sphincter and the rectum. Abstract. Damage to the anal sphincter caused by episiotomy can result in fecal incontinence (loss of control over defecation). Conversely, one of the reasons episiotomy is performed is to prevent tearing of the anal sphincter, which is also associated with faecal incontinence.
