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Modified Global Alignment and Proportion Scoring With Body Mass Index and Bone Mineral Density Analysis in Global Alignment and Proportion Score of Each 3 Categories for Predicting Mechanical Complications After Adult Spinal Deformity Surgery

 Sung Hyun Noh  ;  Yoon Ha  ;  Jeong Yoon Park  ;  Sung Uk Kuh  ;  Dong Kyu Chin  ;  Keun Su Kim  ;  Yong Eun Cho  ;  Hye Sun Lee  ;  Kyung Hyun Kim 
 NEUROSPINE, Vol.18(3) : 484-491, 2021-09 
Journal Title
Issue Date
Adult spinal deformity ; Body mass index ; Bone mineral density ; Global alignment and proportion scoring ; Mechanical complication ; Retrospective study
Objective: This study aimed to analyze the prediction rate of the modified Global Alignment and Proportion (GAP) scoring system with body mass index and bone mineral density (GAPB) in each GAP of the 3 categories.

Methods: Between January 2009 and December 2016, 203 consecutive patients with adult spinal deformity (ASD) underwent corrective fusion of more than 4 levels and were followedup for more than 2 years. As a validation of the GAPB, the GAPB was divided into tertiles (Q1, Q2, Q3) for each section of the GAP score. Each patient's GAP score and GAPB system complication rate were examined.

Results: Of the 203 patients, 89 patients (44%) developed mechanical complications after ASD surgery. A GAP score analysis of the patients found that 42 patients were proportioned, 85 patients were moderately disproportioned, and 76 patients were severely disproportioned. Mechanical complications occurred with increasing GAPB in the proportioned group, but were not statistically significant (p = 0.0534). However, mechanical complications occurred in a statistically significant manner in the moderately disproportioned and severely disproportioned groups as GAPB increased (p < 0.001).

Conclusion: The GAPB system showed improved predictability for mechanical complications after surgery for ASD in each category of the GAP score.
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1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
Kuh, Sung Uk(구성욱) ORCID logo https://orcid.org/0000-0003-2566-3209
Kim, Kyung Hyun(김경현)
Kim, Keun Su(김근수) ORCID logo https://orcid.org/0000-0002-3384-5638
Noh, Sung Hyun(노성현)
Park, Jeong Yoon(박정윤) ORCID logo https://orcid.org/0000-0002-3728-7784
Lee, Hye Sun(이혜선) ORCID logo https://orcid.org/0000-0001-6328-6948
Cho, Yong Eun(조용은) ORCID logo https://orcid.org/0000-0001-9815-2720
Chin, Dong Kyu(진동규) ORCID logo https://orcid.org/0000-0002-9835-9294
Ha, Yoon(하윤)
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