John O L Delancey

Summary

Affiliation: University of Melbourne
Country: Australia

Publications

  1. pmc Clitoral anatomy in nulliparous, healthy, premenopausal volunteers using unenhanced magnetic resonance imaging
    Helen E O'Connell
    Department of Surgery, University of Melbourne, Parkville, Victoria, Australia
    J Urol 173:2060-3. 2005
  2. pmc The axial location of structural regions in the urethra: a magnetic resonance study in nulliparous women
    Wolfgang H Umek
    Division of Gynecology, Department of Obstetrics and Gynecology, University of Michigan Medical School, Ann Arbor, Michigan 48109 0276, USA
    Obstet Gynecol 102:1039-45. 2003
  3. ncbi request reprint Age effects on urethral striated muscle. I. Changes in number and diameter of striated muscle fibers in the ventral urethra
    Daniele Perucchini
    Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, USA
    Am J Obstet Gynecol 186:351-5. 2002
  4. pmc Childbirth and pelvic floor dysfunction: an epidemiologic approach to the assessment of prevention opportunities at delivery
    Divya A Patel
    OB GYN Health Services Research Group, Department of Obstetrics and Gynecology, University of Michigan Medical School, Ann Arbor, USA
    Am J Obstet Gynecol 195:23-8. 2006
  5. pmc Appearance of the levator ani muscle subdivisions in magnetic resonance images
    Rebecca U Margulies
    University of Michigan, Ann Arbor, Michigan 48109 0276, USA
    Obstet Gynecol 107:1064-9. 2006
  6. ncbi request reprint Effects of aging on lower urinary tract and pelvic floor function in nulliparous women
    Elisa Rodriguez Trowbridge
    Division of Gynecology, Department of Obstetrics and Gynecology, University of Michigan Medical Center, University of Michigan, Ann Arbor, Michigan 48109, USA
    Obstet Gynecol 109:715-20. 2007
  7. ncbi request reprint Functional anatomy of the female pelvic floor
    James A Ashton-Miller
    Department of Mechanical Engineering, Biomechanics Engineering and Institute of Gerontology, G G Brown 3208, University of Michigan, Ann Arbor, MI 48109 2125, USA
    Ann N Y Acad Sci 1101:266-96. 2007
  8. pmc Age effects on internal anal sphincter thickness and diameter in nulliparous females
    Markus Huebner
    Pelvic Floor Research Group, University of Michigan, Ann Arbor, MI 48109 0276, USA
    Dis Colon Rectum 50:1405-11. 2007
  9. pmc Vaginal birth and de novo stress incontinence: relative contributions of urethral dysfunction and mobility
    John O L Delancey
    Department of Obstetrics and Gynecology, Pelvic Floor Research Group, and School of Nursing, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
    Obstet Gynecol 110:354-62. 2007
  10. pmc Symptoms of anal incontinence and difficult defecation among women with prolapse and a matched control cohort
    Daniel M Morgan
    Department of Obstetrics and Gynecology, University of Michigan Medical School, Ann Arbor, MI 48109 0276, USA
    Am J Obstet Gynecol 197:509.e1-6. 2007

Collaborators

Detail Information

Publications27

  1. pmc Clitoral anatomy in nulliparous, healthy, premenopausal volunteers using unenhanced magnetic resonance imaging
    Helen E O'Connell
    Department of Surgery, University of Melbourne, Parkville, Victoria, Australia
    J Urol 173:2060-3. 2005
    ..We determined the magnetic resonance imaging (MRI) characteristics of normal clitoral anatomy...
  2. pmc The axial location of structural regions in the urethra: a magnetic resonance study in nulliparous women
    Wolfgang H Umek
    Division of Gynecology, Department of Obstetrics and Gynecology, University of Michigan Medical School, Ann Arbor, Michigan 48109 0276, USA
    Obstet Gynecol 102:1039-45. 2003
    ..To define and quantify the appearance and location of distinct regions of the bladder neck and urethra by using axial magnetic resonance images from healthy, continent, nulliparous women...
  3. ncbi request reprint Age effects on urethral striated muscle. I. Changes in number and diameter of striated muscle fibers in the ventral urethra
    Daniele Perucchini
    Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, USA
    Am J Obstet Gynecol 186:351-5. 2002
    ..This study was undertaken to test the null hypothesis that the number of striated muscle fibers in the ventral wall of the female urethra remains constant with increasing age...
  4. pmc Childbirth and pelvic floor dysfunction: an epidemiologic approach to the assessment of prevention opportunities at delivery
    Divya A Patel
    OB GYN Health Services Research Group, Department of Obstetrics and Gynecology, University of Michigan Medical School, Ann Arbor, USA
    Am J Obstet Gynecol 195:23-8. 2006
    ....
  5. pmc Appearance of the levator ani muscle subdivisions in magnetic resonance images
    Rebecca U Margulies
    University of Michigan, Ann Arbor, Michigan 48109 0276, USA
    Obstet Gynecol 107:1064-9. 2006
    ..Identify and describe the separate appearance of 5 levator ani muscle subdivisions seen in axial, coronal, and sagittal magnetic resonance imaging (MRI) scan planes...
  6. ncbi request reprint Effects of aging on lower urinary tract and pelvic floor function in nulliparous women
    Elisa Rodriguez Trowbridge
    Division of Gynecology, Department of Obstetrics and Gynecology, University of Michigan Medical Center, University of Michigan, Ann Arbor, Michigan 48109, USA
    Obstet Gynecol 109:715-20. 2007
    ..To evaluate the effects of aging, independent of parity, on pelvic organ and urethral support, urethral function, and levator function in a sample of nulliparous women...
  7. ncbi request reprint Functional anatomy of the female pelvic floor
    James A Ashton-Miller
    Department of Mechanical Engineering, Biomechanics Engineering and Institute of Gerontology, G G Brown 3208, University of Michigan, Ann Arbor, MI 48109 2125, USA
    Ann N Y Acad Sci 1101:266-96. 2007
    ..3 and the pudendal nerve under strains of up to 33%, respectively. Research is needed to better identify the pathomechanics of these conditions...
  8. pmc Age effects on internal anal sphincter thickness and diameter in nulliparous females
    Markus Huebner
    Pelvic Floor Research Group, University of Michigan, Ann Arbor, MI 48109 0276, USA
    Dis Colon Rectum 50:1405-11. 2007
    ..This study compares the effect of aging on the internal anal sphincter thickness and diameter in younger and older nulliparous females without symptoms of fecal incontinence undisturbed by an endoanal probe...
  9. pmc Vaginal birth and de novo stress incontinence: relative contributions of urethral dysfunction and mobility
    John O L Delancey
    Department of Obstetrics and Gynecology, Pelvic Floor Research Group, and School of Nursing, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
    Obstet Gynecol 110:354-62. 2007
    ..To evaluate the relative contributions of urethral mobility and urethral function to stress incontinence...
  10. pmc Symptoms of anal incontinence and difficult defecation among women with prolapse and a matched control cohort
    Daniel M Morgan
    Department of Obstetrics and Gynecology, University of Michigan Medical School, Ann Arbor, MI 48109 0276, USA
    Am J Obstet Gynecol 197:509.e1-6. 2007
    ....
  11. pmc Posterior compartment anatomy as seen in magnetic resonance imaging and 3-dimensional reconstruction from asymptomatic nulliparas
    Yvonne Hsu
    Pelvic Floor Research Group and Division of Gynecology, Department of Obstetrics and Gynecology, University of Michigan Medical School, Ann Arbor, MI, USA
    Am J Obstet Gynecol 198:651.e1-7. 2008
    ..The objective of the study was to identify characteristic anatomical features of the posterior compartment using magnetic resonance (MR) cross-sectional anatomy and 3-dimensional (3-D) modeling...
  12. pmc Stress urinary incontinence: relative importance of urethral support and urethral closure pressure
    John O L Delancey
    Department of Obstetrics and Gynecology, Pelvic Floor Research Group, University of Michigan, Ann Arbor, Michigan, USA
    J Urol 179:2286-90; discussion 2290. 2008
    ..To our knowledge the relative importance of these 2 factors has not been assessed in properly controlled studies...
  13. pmc Distribution of pelvic organ support measures in a population-based sample of middle-aged, community-dwelling African American and white women in southeastern Michigan
    Elisa R Trowbridge
    Department of Obstetrics and Gynecology, University of Michigan Medical School, Ann Arbor, MI, USA
    Am J Obstet Gynecol 198:548.e1-6. 2008
    ....
  14. pmc The relationship between anterior and apical compartment support
    Aimee Summers
    Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, USA
    Am J Obstet Gynecol 194:1438-43. 2006
    ....
  15. pmc Obstetric factors associated with levator ani muscle injury after vaginal birth
    Rohna Kearney
    University College Hospital, London, United Kingdom
    Obstet Gynecol 107:144-9. 2006
    ..To identify obstetric factors associated with development of levator ani injury after vaginal birth...
  16. pmc Interrater reliability and physical examination of the pubovisceral portion of the levator ani muscle, validity comparisons using MR imaging
    Rohna Kearney
    Department of Obstetrics and Gynecology, University of Michigan Medical School, Ann Arbor, Michigan, USA
    Neurourol Urodyn 25:50-4. 2006
    ..This study aims to determine interrater reliability of physical examination in detecting these defects, and to validate findings from physical examination using comparisons with MR images...
  17. ncbi request reprint Age effects on urethral striated muscle. II. Anatomic location of muscle loss
    Daniele Perucchini
    Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, USA
    Am J Obstet Gynecol 186:356-60. 2002
    ..The purpose of the study was to measure the thickness and cross-sectional area of urethral muscle layers to identify localized striated muscle loss...
  18. ncbi request reprint Fascial and muscular abnormalities in women with urethral hypermobility and anterior vaginal wall prolapse
    John O L Delancey
    Department of Obstetrics and Gynecology, University of Michigan Medical Center, Ann Arbor, 48109 0276, USA
    Am J Obstet Gynecol 187:93-8. 2002
    ..Our purpose was to assess the structural integrity of individual elements of the urethral and anterior vaginal wall support system...
  19. ncbi request reprint Anatomic variations in the levator ani muscle, endopelvic fascia, and urethra in nulliparas evaluated by magnetic resonance imaging
    Ralf Tunn
    Department of Obstetrics and Gynecology, Charite Campus Mitte, Humboldt Universitat zu Berlin, Berlin, Germany
    Am J Obstet Gynecol 188:116-21. 2003
    ..The purpose of this study was to develop a system to quantify interindividual variation in the appearance of continence system structures in normal continent nulliparous women...
  20. ncbi request reprint A technique to evaluate the thickness and density of nonvascular smooth muscle in the suburethral fibromuscular layer
    Daniel M Morgan
    University of Michigan Medical Center, 1500 E Medical Center Drive, Room L4100, Ann Arbor, MI 48109 0276, USA
    Am J Obstet Gynecol 188:1183-5. 2003
    ..This study was undertaken to develop a method to systematically quantify differences in the thickness and density of nonvascular smooth muscle within the SUFML and to demonstrate its use in assessing variation...
  21. ncbi request reprint Fecal and urinary incontinence after vaginal delivery with anal sphincter disruption in an obstetrics unit in the United States
    Dee E Fenner
    Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, USA
    Am J Obstet Gynecol 189:1543-9; discussion 1549-50. 2003
    ....
  22. ncbi request reprint Pathophysiology of adult urinary incontinence
    John O L Delancey
    Department of Obstetrics and Gynecology, Institute of Gerontology, University of Michigan at Ann Arbor, 48109 0276, USA
    Gastroenterology 126:S23-32. 2004
    ..Activation of the levator muscle during abdominal pressurization is important to this stabilization process. The integrity of the connection between the vaginal wall and tendinous arch also plays an important role...
  23. pmc Quantitative analysis of uterosacral ligament origin and insertion points by magnetic resonance imaging
    Wolfgang H Umek
    Division of Gynecology, Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, USA
    Obstet Gynecol 103:447-51. 2004
    ....
  24. ncbi request reprint Can women without visible pubococcygeal muscle in MR images still increase urethral closure pressures?
    Janis M Miller
    Department of Obstetrics and Gynecology, School of Nursing, University of Michigan, Ann Arbor, USA
    Am J Obstet Gynecol 191:171-5. 2004
    ..The purpose of this study was to determine if the ability to increase maximum urethral closure pressure (MUCP) with a pelvic muscle contraction is impaired in women without pubococcygeal muscle (PCM)...
  25. pmc Vaginal thickness, cross-sectional area, and perimeter in women with and those without prolapse
    Yvonne Hsu
    Division of Gynecology, Department of Obstetrics and Gynecology, University of Michigan Medical School, Ann Arbor, Michigan, USA
    Obstet Gynecol 105:1012-7. 2005
    ..Use axial magnetic resonance imaging to test the null hypothesis that no difference exists in apparent vaginal thickness between women with and those without prolapse...
  26. ncbi request reprint Does vaginal closure force differ in the supine and standing positions?
    Daniel M Morgan
    Department of Obstetrics and Gynecology, Pelvic Floor Research Group, University of Michigan Medical School, Ann Arbor 48109, USA
    Am J Obstet Gynecol 192:1722-8. 2005
    ....
  27. pmc Urethral circular smooth muscle in young and old women
    Amy Clobes
    Department of Obstetrics and Gynecology, Women s Hospital, University of Michigan, Ann Arbor, MI 48109, USA
    Am J Obstet Gynecol 198:587.e1-5. 2008
    ..The purpose of this study was to determine whether thickness, fiber count, and density of urethral circular smooth muscle (CSM) differ in young and old women...