Figure 2

Retro-anal ultrasound of the levator plate. A: position of the probe between anus and coccyx (levator plate or ano-coccygeal raphe in red). B: ultrasonographic image: 1 = posterior rectal wall, 2 = levator plate, 3 = coccyx. Dotted lines represent structures which are not in the section plane: thin lines = limits of the levator hiatus, thick line = right pudendal nerve. Small red ring = anal sphincter.