ArticleAsian spine journal2025
Pelvic ring ratio: a novel indicator of comprehensive pelvic alignment assessment.
Article in Asian spine journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Differences in pelvic tilt and spinal alignment according to age in patients with hip dysplasia.Archives of orthopaedic and trauma surgery · 2026Article
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8 authors.
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No grant is acknowledged in the PubMed record.
Abstract
STUDY
designA cross-sectional study. PURPOSE: To determine the effectiveness of the pelvic ring ratio as an indicator for assessing pelvic tilt (PT) from the frontal view and explore its correlation with various whole-body sagittal alignment (WBSA) parameters using EOS imaging technology. OVERVIEW OF LITERATURE: Traditional indicators of PT often rely on sagittal plane measurements, which can be challenging in cases of pelvic rotation or obesity. A new indicator such as the pelvic ring ratio could address these challenges and aid in the comprehensive assessment of pelvic alignment.
methodsIn total, 104 healthy participants (28 men, 76 women; mean age, 52.8±12.3 years) with no spinal disorders were recruited. Whole-body radiography using the EOS imaging system was performed to obtain sagittal and coronal parameters, including the pelvic ring ratio. Intra- and interobserver variability were assessed using intraclass correlation coefficients (ICCs) based on measurements by three spine surgery specialists. Correlation analyses among the pelvic ring ratio, age, body mass index, and WBSA parameters were conducted, and a multiple linear regression model was developed to predict PT.
resultsThe mean pelvic ring ratio was 53.3%±11.5%. The intra- and interobserver ICCs were 0.89 and 0.87, respectively, indicating good reliability. The pelvic ring ratio was negatively correlated with age (r =-0.387, p <0.05) and PT (r =-0.598, p <0.05). The regression model revealed that the pelvic ring ratio and sex significantly predicted PT (p <0.05). Women had higher pelvic ring ratio (55.0%±11.3%) than men (48.6%±10.8%).
conclusionsThe pelvic ring ratio is a reliable and valuable indicator for PT assessment from the frontal view. It exhibits significant correlations with age and certain WBSA parameters, showing potential to improving the diagnostic accuracy and treatment planning for patients with spinal and hip disorders.
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