Racial differences in pelvic anatomy by magnetic resonance imaging

Victoria L. Handa, Mark E. Lockhart, Julia R. Fielding, Catherine S. Bradley, Linda Brubaker, Geoffrey W. Cundiff, Wen Ye, Holly E. Richter

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

OBJECTIVES: To use static and dynamic magnetic resonance imaging (MRI) to compare dimensions of the bony pelvis and soft tissue structures in a sample of African-American and white women. METHODS: This study used data from 234 participants in the Childbirth and Pelvic Symptoms Imaging Study, a cohort study of 104 primiparous women with an obstetric anal sphincter tear, 94 who delivered vaginally without a recognized anal sphincter tear and 36 who underwent by cesarean delivery without labor. Race was self-reported. At 6-12 months postpartum, rapid acquisition T2-weighted pelvic MRIs were obtained. Bony and soft tissue dimensions were measured and compared between white and African-American participants using analysis of variance, while controlling for delivery type and age. RESULTS: The pelvic inlet was wider among 178 white women than 56 African-American women (10.7±0.7 cm compared with 10.0.+0.7 cm, P<.001). The outlet was also wider (mean intertuberous diameter 12.3±1.0 cm compared with 11.8±0.9 cm, P<.001). There were no significant differences between racial groups in interspinous diameter, angle of the subpubic arch, anteroposterior conjugate, levator thickness, or levator hiatus. In addition, among women who delivered vaginally without a sphincter tear, African-American women had more pelvic floor mobility than white women. This difference was not observed among women who had sustained an obstetric sphincter tear. CONCLUSION: White women have a wider pelvic inlet, wider outlet, and shallower anteroposterior outlet than African-American women. In addition, after vaginal delivery, white women demonstrate less pelvic floor mobility. These differences may contribute to observed racial differences in obstetric outcomes and to the development of pelvic floor disorders.

Original languageEnglish (US)
Pages (from-to)914-920
Number of pages7
JournalObstetrics and Gynecology
Volume111
Issue number4
DOIs
StatePublished - Apr 1 2008

Fingerprint

Anatomy
Magnetic Resonance Imaging
African Americans
Obstetrics
Pelvic Floor
Anal Canal
Tears
Pelvic Floor Disorders
Pelvis
Postpartum Period
Analysis of Variance
Cohort Studies
Parturition

ASJC Scopus subject areas

  • Obstetrics and Gynecology

Cite this

Handa, V. L., Lockhart, M. E., Fielding, J. R., Bradley, C. S., Brubaker, L., Cundiff, G. W., ... Richter, H. E. (2008). Racial differences in pelvic anatomy by magnetic resonance imaging. Obstetrics and Gynecology, 111(4), 914-920. https://doi.org/10.1097/AOG.0b013e318169ce03

Racial differences in pelvic anatomy by magnetic resonance imaging. / Handa, Victoria L.; Lockhart, Mark E.; Fielding, Julia R.; Bradley, Catherine S.; Brubaker, Linda; Cundiff, Geoffrey W.; Ye, Wen; Richter, Holly E.

In: Obstetrics and Gynecology, Vol. 111, No. 4, 01.04.2008, p. 914-920.

Research output: Contribution to journalArticle

Handa, VL, Lockhart, ME, Fielding, JR, Bradley, CS, Brubaker, L, Cundiff, GW, Ye, W & Richter, HE 2008, 'Racial differences in pelvic anatomy by magnetic resonance imaging', Obstetrics and Gynecology, vol. 111, no. 4, pp. 914-920. https://doi.org/10.1097/AOG.0b013e318169ce03
Handa, Victoria L. ; Lockhart, Mark E. ; Fielding, Julia R. ; Bradley, Catherine S. ; Brubaker, Linda ; Cundiff, Geoffrey W. ; Ye, Wen ; Richter, Holly E. / Racial differences in pelvic anatomy by magnetic resonance imaging. In: Obstetrics and Gynecology. 2008 ; Vol. 111, No. 4. pp. 914-920.
@article{b6798bf6745945bebd0399cff95c2829,
title = "Racial differences in pelvic anatomy by magnetic resonance imaging",
abstract = "OBJECTIVES: To use static and dynamic magnetic resonance imaging (MRI) to compare dimensions of the bony pelvis and soft tissue structures in a sample of African-American and white women. METHODS: This study used data from 234 participants in the Childbirth and Pelvic Symptoms Imaging Study, a cohort study of 104 primiparous women with an obstetric anal sphincter tear, 94 who delivered vaginally without a recognized anal sphincter tear and 36 who underwent by cesarean delivery without labor. Race was self-reported. At 6-12 months postpartum, rapid acquisition T2-weighted pelvic MRIs were obtained. Bony and soft tissue dimensions were measured and compared between white and African-American participants using analysis of variance, while controlling for delivery type and age. RESULTS: The pelvic inlet was wider among 178 white women than 56 African-American women (10.7±0.7 cm compared with 10.0.+0.7 cm, P<.001). The outlet was also wider (mean intertuberous diameter 12.3±1.0 cm compared with 11.8±0.9 cm, P<.001). There were no significant differences between racial groups in interspinous diameter, angle of the subpubic arch, anteroposterior conjugate, levator thickness, or levator hiatus. In addition, among women who delivered vaginally without a sphincter tear, African-American women had more pelvic floor mobility than white women. This difference was not observed among women who had sustained an obstetric sphincter tear. CONCLUSION: White women have a wider pelvic inlet, wider outlet, and shallower anteroposterior outlet than African-American women. In addition, after vaginal delivery, white women demonstrate less pelvic floor mobility. These differences may contribute to observed racial differences in obstetric outcomes and to the development of pelvic floor disorders.",
author = "Handa, {Victoria L.} and Lockhart, {Mark E.} and Fielding, {Julia R.} and Bradley, {Catherine S.} and Linda Brubaker and Cundiff, {Geoffrey W.} and Wen Ye and Richter, {Holly E.}",
year = "2008",
month = "4",
day = "1",
doi = "10.1097/AOG.0b013e318169ce03",
language = "English (US)",
volume = "111",
pages = "914--920",
journal = "Obstetrics and Gynecology",
issn = "0029-7844",
publisher = "Lippincott Williams and Wilkins",
number = "4",

}

TY - JOUR

T1 - Racial differences in pelvic anatomy by magnetic resonance imaging

AU - Handa, Victoria L.

AU - Lockhart, Mark E.

AU - Fielding, Julia R.

AU - Bradley, Catherine S.

AU - Brubaker, Linda

AU - Cundiff, Geoffrey W.

AU - Ye, Wen

AU - Richter, Holly E.

PY - 2008/4/1

Y1 - 2008/4/1

N2 - OBJECTIVES: To use static and dynamic magnetic resonance imaging (MRI) to compare dimensions of the bony pelvis and soft tissue structures in a sample of African-American and white women. METHODS: This study used data from 234 participants in the Childbirth and Pelvic Symptoms Imaging Study, a cohort study of 104 primiparous women with an obstetric anal sphincter tear, 94 who delivered vaginally without a recognized anal sphincter tear and 36 who underwent by cesarean delivery without labor. Race was self-reported. At 6-12 months postpartum, rapid acquisition T2-weighted pelvic MRIs were obtained. Bony and soft tissue dimensions were measured and compared between white and African-American participants using analysis of variance, while controlling for delivery type and age. RESULTS: The pelvic inlet was wider among 178 white women than 56 African-American women (10.7±0.7 cm compared with 10.0.+0.7 cm, P<.001). The outlet was also wider (mean intertuberous diameter 12.3±1.0 cm compared with 11.8±0.9 cm, P<.001). There were no significant differences between racial groups in interspinous diameter, angle of the subpubic arch, anteroposterior conjugate, levator thickness, or levator hiatus. In addition, among women who delivered vaginally without a sphincter tear, African-American women had more pelvic floor mobility than white women. This difference was not observed among women who had sustained an obstetric sphincter tear. CONCLUSION: White women have a wider pelvic inlet, wider outlet, and shallower anteroposterior outlet than African-American women. In addition, after vaginal delivery, white women demonstrate less pelvic floor mobility. These differences may contribute to observed racial differences in obstetric outcomes and to the development of pelvic floor disorders.

AB - OBJECTIVES: To use static and dynamic magnetic resonance imaging (MRI) to compare dimensions of the bony pelvis and soft tissue structures in a sample of African-American and white women. METHODS: This study used data from 234 participants in the Childbirth and Pelvic Symptoms Imaging Study, a cohort study of 104 primiparous women with an obstetric anal sphincter tear, 94 who delivered vaginally without a recognized anal sphincter tear and 36 who underwent by cesarean delivery without labor. Race was self-reported. At 6-12 months postpartum, rapid acquisition T2-weighted pelvic MRIs were obtained. Bony and soft tissue dimensions were measured and compared between white and African-American participants using analysis of variance, while controlling for delivery type and age. RESULTS: The pelvic inlet was wider among 178 white women than 56 African-American women (10.7±0.7 cm compared with 10.0.+0.7 cm, P<.001). The outlet was also wider (mean intertuberous diameter 12.3±1.0 cm compared with 11.8±0.9 cm, P<.001). There were no significant differences between racial groups in interspinous diameter, angle of the subpubic arch, anteroposterior conjugate, levator thickness, or levator hiatus. In addition, among women who delivered vaginally without a sphincter tear, African-American women had more pelvic floor mobility than white women. This difference was not observed among women who had sustained an obstetric sphincter tear. CONCLUSION: White women have a wider pelvic inlet, wider outlet, and shallower anteroposterior outlet than African-American women. In addition, after vaginal delivery, white women demonstrate less pelvic floor mobility. These differences may contribute to observed racial differences in obstetric outcomes and to the development of pelvic floor disorders.

UR - http://www.scopus.com/inward/record.url?scp=41649093732&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=41649093732&partnerID=8YFLogxK

U2 - 10.1097/AOG.0b013e318169ce03

DO - 10.1097/AOG.0b013e318169ce03

M3 - Article

VL - 111

SP - 914

EP - 920

JO - Obstetrics and Gynecology

JF - Obstetrics and Gynecology

SN - 0029-7844

IS - 4

ER -