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European Spine Journal

, Volume 25, Issue 2, pp 409–416 | Cite as

Analysis of the relationship between coronal and sagittal deformities in adolescent idiopathic scoliosis

  • Panpan Hu
  • Miao Yu
  • Xiao Liu
  • Bin Zhu
  • Xiaoguang LiuEmail author
  • Zhongjun Liu
Original Article

Abstract

Purpose

To characterize the sagittal alignment of each Lenke type and investigate the relationship between coronal and sagittal deformities in adolescent idiopathic scoliotic (AIS) patients.

Methods

A cohort of 184 subjects with AIS was retrospectively recruited. Radiographic data were measured and collected, including the Lenke types, Cobb angles of structural curves, and sagittal spino-pelvic parameters. Subjects were grouped according to their genders, Lenke curve types, lumbar modifiers and the amount of coronal structural curves. The sagittal alignment was then compared between the different groups, and correlation analysis was also taken between coronal and sagittal parameters. Besides, each subject’s Roussouly type was decided and its distribution was compared among different Lenke types.

Results

The cohort included 59 males and 125 females, averagely aged at 15.5 ± 3.3 years old. Most sagittal parameters except thoracic kyphosis (TK) and pelvic tilt (PT) were similar among different Lenke types, while all the sagittal parameters were similar between males and females. The groups with different lumbar modifiers had similar sagittal parameters except TK, which was also true for the groups with different amounts of coronal curves. 42.4 % of the cohort belonged to Roussouly type 3, and the distribution of Roussouly types was comparable among all Lenke types. All sagittal parameters except C7 translation ratio were significantly different among Roussouly types (P < 0.05). Correlation analysis showed that main thoracic (MT) was negatively correlated with lumbar lordosis (LL, r = −0.324), sacral slope (r = −0.321) and spino-sacral angle (r = −0.363). Partial correlation analysis found that thoracolumbar/lumbar was negatively correlated with TK (r = −0.464) and LL (r = −0.422) when MT was controlled.

Conclusions

The influence of coronal deformity on sagittal parameters was limited and mainly reflected in the deviation of TK. Most coronal and sagittal parameters were not significantly correlated, and the coronal deformity types did not change the global sagittal postural patterns.

Keywords

Adolescent idiopathic scoliosis Coronal deformity Sagittal alignment Trans-dimensional relationship 

Notes

Conflict of interest

No funds were received in support of this work. No benefits in any form have been or will be received from a commercial party related directly or indirectly to the subjects of this manuscript.

Supplementary material

586_2015_3986_MOESM1_ESM.docx (17 kb)
Supplementary material 1 (DOCX 16 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Panpan Hu
    • 1
  • Miao Yu
    • 1
  • Xiao Liu
    • 1
  • Bin Zhu
    • 1
  • Xiaoguang Liu
    • 1
    Email author
  • Zhongjun Liu
    • 1
  1. 1.Department of OrthopedicsPeking University Third HospitalBeijingChina

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