Female levator muscles: three-dimensional form

Digitally enhanced three-dimensional reconstructions of the female pelvic floor from a magnetic resonance image of the pelvis in a normal nulliparous 23-year-old woman.
(A) Anterior view of the levator ani muscle with normal resting tone.
(B) Sagittal view of the levator ani muscle, bony pelvis, vagina, and rectum.
(C) Posterior view of the levator ani muscle, obturator internus muscles, and bony pelvis.
(D) Lithotomy view.