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01-02-2007 | Original Article

Sagittal spinopelvic balance in normal children and adolescents

Authors: Jean-Marc Mac-Thiong, Hubert Labelle, Eric Berthonnaud, Randal R. Betz, Pierre Roussouly

Published in: European Spine Journal | Issue 2/2007

Abstract

The sagittal spinopelvic balance is poorly documented in normal pediatric subjects. The purpose of this study is to characterize the sagittal spinopelvic balance in the pediatric population and to evaluate the correlations between spinopelvic parameters. Seven parameters were evaluated from the lateral standing radiographs of 341 normal subjects aged 3–18 years old: thoracic kyphosis (TK), thoracic tilt (TT), lumbar lordosis (LL), lumbar tilt (LT), sacral slope (SS), pelvic tilt (PT) and pelvic incidence (PI). The mean values for the pelvic parameters were 49.1±11.0, 7.7±8.0 and 41.4±8.2° for PI, PT and SS, respectively. The mean values for the spinal parameters were 48.0±11.7, 44.0±10.9, −7.3±5.2 and −3.1±5.2° for LL, TK, LT and TT, respectively. The spinopelvic parameters were different from those reported in normal adults, but the correlations between the parameters were similar. PI was significantly related to SS and PT. Significant correlations were found between the parameters of adjacent anatomical regions. Pelvic morphology (PI) regulates sagittal sacro-pelvic orientation (SS and PT). Sacral orientation (SS) is correlated with the shape (LL) and orientation (LT) of the lumbar spine. Adjacent anatomical regions of the spine and pelvis are interdependent, and their relationships result in a stable and compensated posture, presumably to minimize energy expenditure. Results from this study could be used as an aid for the planning of surgery in pediatric patients with spinal deformity in order to restore a relatively normal sagittal spinopelvic balance.

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Title: Sagittal spinopelvic balance in normal children and adolescents
Authors: Jean-Marc Mac-Thiong
Hubert Labelle
Eric Berthonnaud
Randal R. Betz
Pierre Roussouly
Publication date: 01-02-2007
Publisher: Springer-Verlag
Published in: European Spine Journal / Issue 2/2007
Print ISSN: 0940-6719
Electronic ISSN: 1432-0932
DOI: https://doi.org/10.1007/s00586-005-0013-8

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Sagittal spinopelvic balance in normal children and adolescents

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