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Clinical relationship |
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| Name = Pelvic outlet
| Latin = apertura pelvis inferior
| Image = Gray239.png
| Caption = Diameters of inferior aperture of lesser pelvis (female)
| Image2 = 1116 Muscle of the Female Perineum.png
| Caption2 = Muscles of the female perineum
}}
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]].
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* laterally: the [[ischial tuberosities]]
* posterolaterally: the inferior margin of the sacrotuberous ligament
* posteriorly: the anterior border of the middle of the [[coccyx]].<ref>{{cite book|isbn=978-0-443-10281-3|year=2010|publisher=Elsevier Ltd|author=Sara Paterson-Brown, Phillip Bennett, Catherine Williamson|title=Basic Science in Obstetrics and Gynaecology (Fourth Edition) - Obstetric pelvic definitions and dimensions}}</ref>
==Notches==
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==In situ==
When the ligaments are in situ, the inferior aperture of the pelvis is [[Lozenge (shape)|lozenge]]-shaped, bounded as follows:
* in front, by the [[pubic arcuate ligament]] and the [[inferior rami of the pubes]] and [[ischia]]
* laterally, by the [[ischial tuberosities]]
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==See also==
* [[Pelvic inlet]]
==Additional images==
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File:Gray319.png|Articulations of pelvis. Anterior view.
File:Gray320.png|Articulations of pelvis. Posterior view.
File:Low-dose CT of sagittal pelvic outlet diameter.jpg|Low-dose [[CT scan]] of sagittal pelvic outlet diameter as part of [[pelvimetry]]
File:Low-dose CT scan of intertuberous diameter.jpg|Intertuberous diameter, as a measure of the transverse measure of the pelvic outlet
</gallery>
==References==
{{Reflist}}
==External links==
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{{Pelvis}}
{{Authority control}}
[[Category:Pelvis]]
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