International Urogynecology Journal

, Volume 30, Issue 1, pp 47–51 | Cite as

Defining normal apical vaginal support: a relook at the POSST study

  • Radhika PatnamEmail author
  • Autumn Edenfield
  • Steven Swift
Original Article


Introduction and hypothesis

The purpose of this study is to reanalyze data from the original 2005 Pelvic Organ Support Study (POSST) data set to define normal values for apical Pelvic Organ Prolapse Quantification (POP-Q) points C and D and total vaginal length (TVL) in an asymptomatic population of women.


In this retrospective observational data-set review, patient were >18 years presenting for annual gynecologic exams to six centers in the United States. Data included demographics, questions about prolapse symptoms, and POP-Q points. Means and standard deviations were determined for each POP-Q point in the total population.


The data set comprised 1011 women; 59 were excluded because they met criteria for having POP or were missing data. This left 948 for study. Mean age of our study population was 42 ± 14 years, and 45.6% were white, 25.1% black, and 25.2% Hispanic. One hundred fifty-six had a prior hysterectomy. Mean values with standard deviations (SD) for POP-Q values are as following: point C (vaginal cuff) −7.3 ± 1.5 cm, point C (cervix) −5.9 ± 1.5, point D −8.7 cm ± 1.5 cm, TVL (no hysterectomy) 9.8 cm ± 1.3 cm, and TVL (hysterectomy) 8.9 cm ± 1.5 cm.


This data suggests normal values for POP-Q apical points in a population of patient with annual gynecological exams.


Apical support Pelvic organ prolapse support 



We would like to extend recognition to the Original POSST study site principal Investigators for their work in collecting and establishing this data set; Patrick Woodman, Deidre Bland, Joseph Schaffer, Michael Valley, Margie Kahn.

Compliance with ethical standards

Conflicts of interest



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Copyright information

© The International Urogynecological Association 2018

Authors and Affiliations

  1. 1.Division of Urogynecology and Reconstructive Pelvic SurgeryUniversity of North Carolina at Chapel HillChapel HillUSA
  2. 2.Department of Obstetrics and GynecologyMedical University of South CarolinaCharlestonUSA

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