Transiency of postoperative cervical kyphosis seen after surgical correction of sagittal malalignment in adult spinal deformity patients.

Transiency of postoperative cervical kyphosis seen after surgical correction of sagittal malalignment in adult spinal deformity patients.

<h4>Objective</h4>In this study, we evaluated factors affecting changes in cervical lordosis after deformity correction and during follow-up period in adult spinal deformity (ASD) patients with severe sagittal imbalance.<h4>Methods</h4>Seventy-nine patients, with an average a...

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Autores principales: Ki Young Lee, Jung-Hee Lee, Sang Kyu Im, Hae Sung Lim, Gil Han
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Lenguaje:EN
Publicado: Public Library of Science (PLoS) 2021
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Acceso en línea:https://doaj.org/article/362a8e4544544c3f81c657965cf0fe4a
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spelling oai:doaj.org-article:362a8e4544544c3f81c657965cf0fe4a2021-12-02T20:06:52ZTransiency of postoperative cervical kyphosis seen after surgical correction of sagittal malalignment in adult spinal deformity patients.1932-620310.1371/journal.pone.0254381https://doaj.org/article/362a8e4544544c3f81c657965cf0fe4a2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0254381https://doaj.org/toc/1932-6203<h4>Objective</h4>In this study, we evaluated factors affecting changes in cervical lordosis after deformity correction and during follow-up period in adult spinal deformity (ASD) patients with severe sagittal imbalance.<h4>Methods</h4>Seventy-nine patients, with an average age of 71.6 years, who underwent long-segment fixation from T10 to S1 with sacropelvic fixation were included. We performed a comparative analysis of the radiographic parameters after surgery (Post) and at the last follow-up (Last). We calculated the Pearson's correlation coefficient and performed multilinear regression analysis to predict independent parameters for Post and Last cervical lordosis (CL), T1 slope (T1S), and thoracic kyphosis (TK).<h4>Results</h4>Hyperlordotic changes of -23.3° in CL before surgery was reduced to -7° after surgery, and Last CL had increased to -15.3°. T1S was reduced from 27° before surgery to 14.4° after surgery and had increased to 18.8° at the last follow-up. Through multilinear regression analysis, we found that Post CL and T1S were more significantly affected by the amount of LL correction (p = .045 and .049). The effect of Last T1S was significantly associated with the Last CL; the effect of Last TK, with the Last T1S; and the effect of Post PI-LL, with the Last TK (p < .05).<h4>Conclusion</h4>The postoperative kyphotic change in CL in ASD patients with preoperative cervical hyperlordosis is not permanent and is affected by drastic LL correction and SVA restoration. To achieve spinopelvic harmony proportional to the difference in LL relative to PI, TK becomes modified over time to increase T1S and CL, in an effort to achieve optimal spine curvature.Ki Young LeeJung-Hee LeeSang Kyu ImHae Sung LimGil HanPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0254381 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Ki Young Lee
Jung-Hee Lee
Sang Kyu Im
Hae Sung Lim
Gil Han
Transiency of postoperative cervical kyphosis seen after surgical correction of sagittal malalignment in adult spinal deformity patients.
description <h4>Objective</h4>In this study, we evaluated factors affecting changes in cervical lordosis after deformity correction and during follow-up period in adult spinal deformity (ASD) patients with severe sagittal imbalance.<h4>Methods</h4>Seventy-nine patients, with an average age of 71.6 years, who underwent long-segment fixation from T10 to S1 with sacropelvic fixation were included. We performed a comparative analysis of the radiographic parameters after surgery (Post) and at the last follow-up (Last). We calculated the Pearson's correlation coefficient and performed multilinear regression analysis to predict independent parameters for Post and Last cervical lordosis (CL), T1 slope (T1S), and thoracic kyphosis (TK).<h4>Results</h4>Hyperlordotic changes of -23.3° in CL before surgery was reduced to -7° after surgery, and Last CL had increased to -15.3°. T1S was reduced from 27° before surgery to 14.4° after surgery and had increased to 18.8° at the last follow-up. Through multilinear regression analysis, we found that Post CL and T1S were more significantly affected by the amount of LL correction (p = .045 and .049). The effect of Last T1S was significantly associated with the Last CL; the effect of Last TK, with the Last T1S; and the effect of Post PI-LL, with the Last TK (p < .05).<h4>Conclusion</h4>The postoperative kyphotic change in CL in ASD patients with preoperative cervical hyperlordosis is not permanent and is affected by drastic LL correction and SVA restoration. To achieve spinopelvic harmony proportional to the difference in LL relative to PI, TK becomes modified over time to increase T1S and CL, in an effort to achieve optimal spine curvature.
format article
author Ki Young Lee
Jung-Hee Lee
Sang Kyu Im
Hae Sung Lim
Gil Han
author_facet Ki Young Lee
Jung-Hee Lee
Sang Kyu Im
Hae Sung Lim
Gil Han
author_sort Ki Young Lee
title Transiency of postoperative cervical kyphosis seen after surgical correction of sagittal malalignment in adult spinal deformity patients.
title_short Transiency of postoperative cervical kyphosis seen after surgical correction of sagittal malalignment in adult spinal deformity patients.
title_full Transiency of postoperative cervical kyphosis seen after surgical correction of sagittal malalignment in adult spinal deformity patients.
title_fullStr Transiency of postoperative cervical kyphosis seen after surgical correction of sagittal malalignment in adult spinal deformity patients.
title_full_unstemmed Transiency of postoperative cervical kyphosis seen after surgical correction of sagittal malalignment in adult spinal deformity patients.
title_sort transiency of postoperative cervical kyphosis seen after surgical correction of sagittal malalignment in adult spinal deformity patients.
publisher Public Library of Science (PLoS)
publishDate 2021
url https://doaj.org/article/362a8e4544544c3f81c657965cf0fe4a
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AT jungheelee transiencyofpostoperativecervicalkyphosisseenaftersurgicalcorrectionofsagittalmalalignmentinadultspinaldeformitypatients
AT sangkyuim transiencyofpostoperativecervicalkyphosisseenaftersurgicalcorrectionofsagittalmalalignmentinadultspinaldeformitypatients
AT haesunglim transiencyofpostoperativecervicalkyphosisseenaftersurgicalcorrectionofsagittalmalalignmentinadultspinaldeformitypatients
AT gilhan transiencyofpostoperativecervicalkyphosisseenaftersurgicalcorrectionofsagittalmalalignmentinadultspinaldeformitypatients
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