Related Experiment Video
Updated: Aug 17, 2026

Anogenital Distance and Perineal Measurements of the Pelvic Organ Prolapse (POP) Quantification System
Published on: September 20, 2018
[Descending perineum in women]
Richard Villet1, Nadim Ayoub, Delphine Salet-Lizée
1Service de Chirurgie Viscérale et Gynécologique, Groupe Hospitalier Diaconesses Croix Saint Simon, Paris, France. rvillet@hopital-dcss.org
Abstract:
The descending perineum syndrome, described in 1970 by Alan Parks, remains difficult to interpret clinically and pathophysiologically. A general review of descending perineum was conducted, based on review of the literature published between 1966 and 2004, and retrospective analysis of 1,023 colpocystograms. The symptoms observed are usually secondary to associated lesions. Radiological signs of descending perineum are not always associated with clinical symptoms. Colpocystogram shows perineal descent and associated disorders of anterior and middle pelvic tone, while defecography provides a better explanation for dyschezia which is generally due to an associated posterior disorder (rectocele with rectal intussusception). The management of descending perineum is based on medical treatment and retraining. No consensus has been reached concerning surgical management. Surgery is generally used to treat associated lesions. In the case of complete collapse of perineum, an abdominal approach with infravesical, prerectal and retrorectal tension-free tape to the sacrum could be useful, while transanal staple repair of the rectum could be proposed when descending perineum is associated with only rectal intussusception or rectocele.
Related Concept Videos
Muscles of the Pelvic Floor and Perineum
Perineal Layer
The perineum is a diamond-shaped area below the pelvic diaphragm, divided into an anterior urogenital triangle that contains the external genitals and a posterior anal triangle housing the anus. The urogenital...
Abdominal Regions and Quadrants
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four quadrants...
Assessment of the Rectum and Anus
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
Urinary Bladder
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...
Peritoneum
Anatomy of the Peritoneum
The peritoneum is divided into two layers: the parietal peritoneum and the visceral...
Muscles of the Abdomen
Anterolateral Region
The anterolateral region comprises five paired muscles classified into the lateral and anterior...

