ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2025
Lower lumbar spine significantly affects the dynamics of pelvic incidence after corrective surgery for adult spinal deformity.
Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 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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1 citing paper in PubMed.
- Association between vertebral endplate lesions and sagittal spinal alignment: a retrospective imaging analysis in a selected adult patient population.European radiology experimental · 2026Article
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Abstract
purposePelvic incidence (PI) is a fundamental parameter influencing sagittal spinal alignment. Recent studies indicate that PI is not a fixed value and may change after surgery for adult spinal deformity (ASD). However, research on this topic is very limited, and no consensus has been reached. The aim of this study is to assess postoperative PI changes in ASD patients and identify the factors influencing these changes with long-term follow-up.
methodsWe reviewed 65 ASD patients who underwent corrective surgery with S2-alar-iliac screws and pedicle subtraction osteotomy. Radiographic parameters were evaluated preoperatively, postoperatively, and at the last follow-up. Correlation and regression analyses were performed to assess the relationship between spinopelvic parameters, immediate postoperative changes in PI (ΔPI), and long-term follow-up changes (ΔΔPI).
resultsThe mean ΔPI and ΔΔPI were - 4.5˚ ± 8.2˚ and 3.6˚ ± 5.9˚, respectively. ΔPI was negatively correlated with preoperative PI (r = -0.42, p < 0.001) and pelvic tilt (r = -0.28, p = 0.025) while positively correlated with the correction of lower lumbar lordosis (ΔLLL) (r = 0.34, p = 0.006). ΔΔPI was negatively correlated with ΔPI (r = -0.48, p < 0.001) and preoperative lower lumbar lordosis (LLL) (r = -0.27, p = 0.029). Multiple regression analysis showed preoperative LLL and ΔLLL significantly influenced both ΔPI and ΔΔPI.
conclusionThis study revealed that PI decreases immediately after ASD surgery but tends to return to its original value. Preoperative LLL and ΔLLL were associated with postoperative PI changes in both the immediate and long-term follow-up periods.
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