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Predicting mid-pelvic interspinous distance in women using height and pubic arch angle

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Listed:
  • Eun Duc Na
  • Min Jung Baek
  • Ji Hyun Moon
  • Cho Won Park
  • Jin Yoon
  • Hanna Lee
  • So Hyeon Park
  • Ji Hyon Jang

Abstract

Objective: To predict the interspinous distance (ISD) using the relationship between female height and pelvimetric measures on magnetic resonance (MR) images. Methods: We obtained measurements of the pubic arch angle (PAA), inlet-anteroposterior (AP) distance, mid-pelvis AP distance, outlet-AP distance, ISD, and ischial tuberosity distance using 710 pelvic MR images from nonpregnant reproductive-aged (21–50 years) women from January 2014 to June 2020. Patient height was also assessed from medical records. We determined the formula for predicting ISD using multiple regression analysis. Results: The mean ± standard deviation of the height, PAA, inlet-AP distance, mid-pelvis AP distance, outlet-AP distance, ISD, and ischial tuberosity distance were 160.0 ± 5.5 cm, 87.31 ± 6.6°, 129.7 ± 9.0 mm, 119.7 ± 8.5 mm, 111.71 ± 8.90 mm, 108.88 ± 8.0 mm, and 121.97 ± 11.8 mm, respectively. Two significant regression formulas for predicting ISD were identified as follows: ISD = 0.24973 × height − 0.06724 × inlet-AP distance + 0.12166 × outlet-AP distance + 0.29233 × ischial tuberosity distance + 0.32524 × PAA (P

Suggested Citation

  • Eun Duc Na & Min Jung Baek & Ji Hyun Moon & Cho Won Park & Jin Yoon & Hanna Lee & So Hyeon Park & Ji Hyon Jang, 2023. "Predicting mid-pelvic interspinous distance in women using height and pubic arch angle," PLOS ONE, Public Library of Science, vol. 18(8), pages 1-10, August.
    • Handle: RePEc:plo:pone00:0289814
    DOI: 10.1371/journal.pone.0289814
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    1. Janine Hoffmann & Katrin Thomassen & Patrick Stumpp & Matthias Grothoff & Christoph Engel & Thomas Kahn & Holger Stepan, 2016. "New MRI Criteria for Successful Vaginal Breech Delivery in Primiparae," PLOS ONE, Public Library of Science, vol. 11(8), pages 1-12, August.
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