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01-09-2011 | Original Article

Sagittal spino-pelvic alignment in chronic low back pain

Authors: Emmanuelle Chaléat-Valayer, Jean-Marc Mac-Thiong, Jérôme Paquet, Eric Berthonnaud, Fabienne Siani, Pierre Roussouly

Published in: European Spine Journal | Special Issue 5/2011

Abstract

Introduction

The differences in sagittal spino-pelvic alignment between adults with chronic low back pain (LBP) and the normal population are still poorly understood. In particular, it is still unknown if particular patterns of sagittal spino-pelvic alignment are more prevalent in chronic LBP. The current study helps to better understand the relationship between sagittal alignment and low back pain.

Materials and methods

To compare the sagittal spino-pelvic alignment of patients with chronic LBP with a cohort of asymptomatic adults. Sagittal spino-pelvic alignment was evaluated in prospective cohorts of 198 patients with chronic LBP and 709 normal subjects. The two cohorts were compared with respect to the sacral slope (SS), pelvic tilt (PT), pelvic incidence (PI), lumbar lordosis (LL), lumbar tilt (LT), lordotic levels, thoracic kyphosis (TK), thoracic tilt (TT), kyphotic levels, and lumbosacral joint angle (LSA). Correlations between parameters were also assessed.

Results

Sagittal spino-pelvic alignment is significantly different in chronic LBP with respect to SS, PI, LT, lordotic levels, TK, TT and LSA, but not PT, LL, and kyphotic levels. Correlations between parameters were similar for the two cohorts. As compared to normal adults, a greater proportion of patients with LBP presented low SS and LL associated with a small PI, while a greater proportion of normal subjects presented normal or high SS associated with normal or high PI.

Conclusion

Sagittal spino-pelvic alignment was different between patients with chronic LBP and controls. In particular, there was a greater proportion of chronic LBP patients with low SS, low LL and small PI, suggesting the relationship between this specific pattern and the presence of chronic LBP.

Bilateral independent Student t tests and chi-square tests were performed to compare means and proportions, respectively. Relationships between parameters were assessed using Pearson’s coefficients. A level of significance of 0.05 was used for all statistical analyses.

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Title: Sagittal spino-pelvic alignment in chronic low back pain
Authors: Emmanuelle Chaléat-Valayer
Jean-Marc Mac-Thiong
Jérôme Paquet
Eric Berthonnaud
Fabienne Siani
Pierre Roussouly
Publication date: 01-09-2011
Publisher: Springer-Verlag
Published in: European Spine Journal / Issue Special Issue 5/2011
Print ISSN: 0940-6719
Electronic ISSN: 1432-0932
DOI: https://doi.org/10.1007/s00586-011-1931-2

At a glance: The STEP trials

Springer Medicine

Sagittal spino-pelvic alignment in chronic low back pain

Abstract

Introduction

Materials and methods

Results

Conclusion

At a glance: The STEP trials

Springer Medicine

Abstract

Introduction

Materials and methods

Results

Conclusion

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