Interactions among pelvic organ protrusion, levator ani descent, and hiatal enlargement in women with and without prolapse

In prolapse, the levator area increases more than the protrusion area and both the urogenital hiatus and levator hiatus are larger. The odds of prolapse for an increase in the urogenital hiatus are 3 times larger than for the levator hiatus, which leads us to reject both the original hypotheses.