If a third-degree tear occurs in hospital, it is usually repaired immediately. If it occurs elsewhere, a patient may present too late for an immediate repair. Or a tear which has been sutured immediately may break down, and need repair later. Sometimes, a tear epithelializes and heals itself. If it is not very extensive, and her levator ani muscles are little damaged, she may not want the operation, and only be incontinent of faeces when her stools are very loose.