Pelvic outlet

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Pelvic outlet
Diameters of inferior aperture of lesser pelvis (female).
1116 Muscle of the Female Perineum.png
Muscles of the female perineum.
Latinapertura pelvis inferior
Anatomical terms of bone

The lower circumference of the lesser pelvis is very irregular; the space enclosed by it is named the inferior aperture or pelvic outlet. It is an important component of pelvimetry.


It has the following boundaries:


These eminences are separated by three notches:

In situ[edit]

When the ligaments are in situ, the inferior aperture of the pelvis is lozenge-shaped, bounded as follows:

See also[edit]

Pelvic inlet

Additional images[edit]

External links[edit]