Fig. 1

Three-dimensional schematic drawing of the component of the pelvic floor integrated into a multilayer system from cranial to caudal consisting of (1) the endopelvic fascia, giving support to the uterus and upper vagina; (2) the pelvic diaphragm, including the puborectalis (solid arrow) and iliococcygeus (dashed arrow); and (3) urogenital diaphragm. AS anal sphincter complex, PB perineal body, R rectum, SP symphysis pubis, U uterus, UB urinary bladder [5]