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Published in: European Spine Journal 2/2018

01-02-2018 | Original Article

Lumbosacral stress and age may contribute to increased pelvic incidence: an analysis of 1625 adults

Authors: Hongda Bao, Barthelemy Liabaud, Jeffrey Varghese, Renaud Lafage, Bassel G. Diebo, Cyrus Jalai, Subaraman Ramchandran, Gregory Poorman, Thomas Errico, Feng Zhu, Themistocles Protopsaltis, Peter Passias, Aaron Buckland, Frank Schwab, Virginie Lafage

Published in: European Spine Journal | Issue 2/2018

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Abstract

Purpose

While there is a consensus that pelvic incidence (PI) remains constant after skeletal maturity, recent reports argue that PI increases after 60 years. This study aims to investigate whether PI increases with age and to determine potential associated factors.

Methods

1510 patients with various spinal degenerative and deformity pathologies were enrolled, along with an additional 115 asymptomatic volunteers. Subjects were divided into six age subgroups with 10-year intervals.

Results

PI averaged 54.1° in all patients. PI was significantly higher in the 45–54-year age group than 35–44-year age group (55.8° vs. 49.7°). There were significant PI differences between genders after age 45. Linear regression revealed age, gender and malalignment as associated factors for increased PI with R 2 of 0.22 (p < 0.001).

Conclusions

PI is higher in female patients and in older patients, especially those over 45 years old. Spinal malalignment also may have a role in increased PI due to increased L5–S1 bending moment.
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Metadata
Title
Lumbosacral stress and age may contribute to increased pelvic incidence: an analysis of 1625 adults
Authors
Hongda Bao
Barthelemy Liabaud
Jeffrey Varghese
Renaud Lafage
Bassel G. Diebo
Cyrus Jalai
Subaraman Ramchandran
Gregory Poorman
Thomas Errico
Feng Zhu
Themistocles Protopsaltis
Peter Passias
Aaron Buckland
Frank Schwab
Virginie Lafage
Publication date
01-02-2018
Publisher
Springer Berlin Heidelberg
Published in
European Spine Journal / Issue 2/2018
Print ISSN: 0940-6719
Electronic ISSN: 1432-0932
DOI
https://doi.org/10.1007/s00586-017-5324-z

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