Association between spinopelvic parameters and postoperative urinary retention in thoracolumbar spine surgery: a propensity-matched analysis

Abstract Postoperative urinary retention (POUR) is a frequent complication following spine surgery, with reported incidence rates ranging from 5 to 70%. While numerous risk factors have been identified, the relationship between spinopelvic parameters and POUR has not been previously investigated. Th...

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Main Authors: Jaenam Lee, Kyung Soo Suk, Byung Ho Lee, Si Young Park, Hak Sun Kim, Seoung Hwan Moon, Sub-ri Park, Namhoo Kim, Jae Won Shin, Ji-Won Kwon
Format: Article
Language:English
Published: Nature Portfolio 2025-06-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-025-04127-9
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author Jaenam Lee
Kyung Soo Suk
Byung Ho Lee
Si Young Park
Hak Sun Kim
Seoung Hwan Moon
Sub-ri Park
Namhoo Kim
Jae Won Shin
Ji-Won Kwon
author_facet Jaenam Lee
Kyung Soo Suk
Byung Ho Lee
Si Young Park
Hak Sun Kim
Seoung Hwan Moon
Sub-ri Park
Namhoo Kim
Jae Won Shin
Ji-Won Kwon
author_sort Jaenam Lee
collection DOAJ
description Abstract Postoperative urinary retention (POUR) is a frequent complication following spine surgery, with reported incidence rates ranging from 5 to 70%. While numerous risk factors have been identified, the relationship between spinopelvic parameters and POUR has not been previously investigated. This retrospective study examined the potential association between spinopelvic alignment and POUR in patients undergoing thoracolumbar spine surgery. We analyzed data from 420 patients who underwent surgery for degenerative thoracolumbar conditions between March 2021 and February 2024. After applying exclusion criteria and performing propensity score matching, 190 patients (95 with POUR, 95 without POUR) were included in the final analysis. Radiological parameters, including lumbar lordosis (LL), lower lumbar lordosis (LLL), pelvic tilt, sacral slope, and pelvic incidence, were assessed using preoperative and postoperative standing radiographs. Multivariable logistic regression analysis identified decreased preoperative LLL (< 27.77°) as an independent predictor of POUR (OR = 2.08, 95% CI = 1.10–3.91, p = 0.024). Additionally, higher intraoperative mean arterial pressure (> 75.35 mmHg) was associated with increased POUR risk (OR = 2.73, 95% CI = 1.08–6.88, p = 0.033). Our findings suggest that spinopelvic alignment, particularly decreased LLL, may play a previously unrecognized role in the development of POUR following thoracolumbar spine surgery. This novel association expands our understanding of POUR pathophysiology and could inform preoperative risk assessment and perioperative management strategies. Future prospective studies are warranted to validate these findings and explore the underlying mechanisms.
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spelling doaj-art-cc533db7f96d4943b50fdf01e86fe4702025-08-20T03:22:02ZengNature PortfolioScientific Reports2045-23222025-06-011511910.1038/s41598-025-04127-9Association between spinopelvic parameters and postoperative urinary retention in thoracolumbar spine surgery: a propensity-matched analysisJaenam Lee0Kyung Soo Suk1Byung Ho Lee2Si Young Park3Hak Sun Kim4Seoung Hwan Moon5Sub-ri Park6Namhoo Kim7Jae Won Shin8Ji-Won Kwon9Department of Orthopedic Surgery, Yonsei University College of MedicineDepartment of Orthopedic Surgery, Yonsei University College of MedicineDepartment of Orthopedic Surgery, Yonsei University College of MedicineDepartment of Orthopedic Surgery, Yonsei University College of MedicineDepartment of Orthopedic Surgery, Yonsei University College of MedicineDepartment of Orthopedic Surgery, Yonsei University College of MedicineDepartment of Orthopedic Surgery, Yonsei University College of MedicineDepartment of Orthopedic Surgery, Yonsei University College of MedicineDepartment of Orthopedic Surgery, Yonsei University College of MedicineDepartment of Orthopedic Surgery, Yonsei University College of MedicineAbstract Postoperative urinary retention (POUR) is a frequent complication following spine surgery, with reported incidence rates ranging from 5 to 70%. While numerous risk factors have been identified, the relationship between spinopelvic parameters and POUR has not been previously investigated. This retrospective study examined the potential association between spinopelvic alignment and POUR in patients undergoing thoracolumbar spine surgery. We analyzed data from 420 patients who underwent surgery for degenerative thoracolumbar conditions between March 2021 and February 2024. After applying exclusion criteria and performing propensity score matching, 190 patients (95 with POUR, 95 without POUR) were included in the final analysis. Radiological parameters, including lumbar lordosis (LL), lower lumbar lordosis (LLL), pelvic tilt, sacral slope, and pelvic incidence, were assessed using preoperative and postoperative standing radiographs. Multivariable logistic regression analysis identified decreased preoperative LLL (< 27.77°) as an independent predictor of POUR (OR = 2.08, 95% CI = 1.10–3.91, p = 0.024). Additionally, higher intraoperative mean arterial pressure (> 75.35 mmHg) was associated with increased POUR risk (OR = 2.73, 95% CI = 1.08–6.88, p = 0.033). Our findings suggest that spinopelvic alignment, particularly decreased LLL, may play a previously unrecognized role in the development of POUR following thoracolumbar spine surgery. This novel association expands our understanding of POUR pathophysiology and could inform preoperative risk assessment and perioperative management strategies. Future prospective studies are warranted to validate these findings and explore the underlying mechanisms.https://doi.org/10.1038/s41598-025-04127-9Urinary retentionThoracolumbar spine surgeryRisk factorsLower lumbar lordosisSpinopelvic alignmentPost-void residual volume
spellingShingle Jaenam Lee
Kyung Soo Suk
Byung Ho Lee
Si Young Park
Hak Sun Kim
Seoung Hwan Moon
Sub-ri Park
Namhoo Kim
Jae Won Shin
Ji-Won Kwon
Association between spinopelvic parameters and postoperative urinary retention in thoracolumbar spine surgery: a propensity-matched analysis
Scientific Reports
Urinary retention
Thoracolumbar spine surgery
Risk factors
Lower lumbar lordosis
Spinopelvic alignment
Post-void residual volume
title Association between spinopelvic parameters and postoperative urinary retention in thoracolumbar spine surgery: a propensity-matched analysis
title_full Association between spinopelvic parameters and postoperative urinary retention in thoracolumbar spine surgery: a propensity-matched analysis
title_fullStr Association between spinopelvic parameters and postoperative urinary retention in thoracolumbar spine surgery: a propensity-matched analysis
title_full_unstemmed Association between spinopelvic parameters and postoperative urinary retention in thoracolumbar spine surgery: a propensity-matched analysis
title_short Association between spinopelvic parameters and postoperative urinary retention in thoracolumbar spine surgery: a propensity-matched analysis
title_sort association between spinopelvic parameters and postoperative urinary retention in thoracolumbar spine surgery a propensity matched analysis
topic Urinary retention
Thoracolumbar spine surgery
Risk factors
Lower lumbar lordosis
Spinopelvic alignment
Post-void residual volume
url https://doi.org/10.1038/s41598-025-04127-9
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