Pelvic Aperture Inferior [Apertura Pelvis Inferior, Pna; Apertura Pelvis (Minoris) Inferior, Bna; Exitus Pelvis, Jna; Syn. Pelvic Outlet]

Inferior pelvic aperture: anatomy and functional significance

The pelvic orifice inferior, also known as the exitus pelvis, is the lower opening of the pelvis through which the genitourinary organs, intestines and other structures pass. It is bounded above by the coccyx and the lower edge of the symphysis, as well as by the sacrospinous and sacrotuberous ligaments, the ischial tuberosities and the lower branches of the ischial and pubic bones.

Pelvic aperture inferior has several synonyms, including apertura pelvis inferior (PNA), apertura pelvis (minoris) inferior (BNA), and pelvic outlet (JNA). It is important to note that anatomical names may vary between sources, which may lead to some confusion.

The functional significance of the lower pelvic aperture is that the genitourinary organs and intestines pass through it, and labor also occurs in women. At the same time, the dimensions of the lower pelvic aperture play an important role in the process of labor. A narrow opening may result in difficulty passing the baby through the pelvis, while a wide opening may promote rapid delivery.

In addition, the inferior pelvic outlet is the site of attachment of muscles and ligaments that support the genitourinary organs and intestines, and also control their function. Disturbances in the functioning of these muscles and ligaments can lead to various disorders, such as incontinence and pelvic organ prolapse.

In conclusion, the inferior pelvic aperture is an important anatomical structure that plays an important role in labor in women, as well as in maintaining the functions of the genitourinary organs and intestines. Understanding its anatomy and functional significance can help in diagnosing and treating various disorders associated with this area of ​​the body.

The low pelvic aperture is a wide opening that is located at the bottom of the pelvis and is an important anatomical formation. It is bounded by the pelvic bones and ligaments and provides exit from the female pelvis. The inferior pelvic outlet is clearly visible on x-rays or ultrasound examinations of the pelvis as an addition to the determination of diseases of the spine and its organs. Below we will look in detail at the structure of the lower aperture of the large pelvis.

The lower aperture of the large pelvis is low