The discrepancy between preoperative cervical sagittal vertical axis and T1 slope predisposes inferior clinical outcomes in patients with cervical spondylotic myelopathy after cervical laminoplasty

ObjectiveCervical sagittal parameters have been widely used to predict clinical outcomes in patients with cervical spondylotic myelopathy (CSM). This study aims to coin a novel cervical sagittal parameter defined as the ratio of cervical sagittal vertical axis to T1 slope (CSVA/T1S) and to investiga...

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Main Authors: Dong-Fan Wang, Wei-Guo Zhu, Wei Wang, Xiang-Yu Li, Chao Kong, Cheng-Xin Liu, Bin Shi, Shi-Bao Lu
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-08-01
Series:Frontiers in Surgery
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fsurg.2022.1003757/full
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author Dong-Fan Wang
Dong-Fan Wang
Wei-Guo Zhu
Wei-Guo Zhu
Wei Wang
Wei Wang
Xiang-Yu Li
Xiang-Yu Li
Chao Kong
Chao Kong
Cheng-Xin Liu
Cheng-Xin Liu
Bin Shi
Bin Shi
Shi-Bao Lu
Shi-Bao Lu
author_facet Dong-Fan Wang
Dong-Fan Wang
Wei-Guo Zhu
Wei-Guo Zhu
Wei Wang
Wei Wang
Xiang-Yu Li
Xiang-Yu Li
Chao Kong
Chao Kong
Cheng-Xin Liu
Cheng-Xin Liu
Bin Shi
Bin Shi
Shi-Bao Lu
Shi-Bao Lu
author_sort Dong-Fan Wang
collection DOAJ
description ObjectiveCervical sagittal parameters have been widely used to predict clinical outcomes in patients with cervical spondylotic myelopathy (CSM). This study aims to coin a novel cervical sagittal parameter defined as the ratio of cervical sagittal vertical axis to T1 slope (CSVA/T1S) and to investigate the correlation between CSVA/T1S and postoperative HRQOL after laminoplasty.MethodsA total of 102 CSM patients treated with cervical laminoplasty from our database were retrospectively reviewed. All patients were followed up for >12 months. Radiological parameters were measured using lateral cervical radiographs, including occiput-C2 lordosis (OC2), cervical lordosis (CL), CSVA, and T1S. Clinical parameters included the Japanese Orthopedic Association (JOA) score, neck disability index (NDI), and JOA recovery rate. Patients were grouped by preoperative T1S, T1S-CL, and CSVA/T1S value, respectively. Clinical and radiological outcomes were compared between the groups.ResultsPatients with high CSVA/T1S had greater OC2 and CSVA but lower CL than those in the low CSVA/T1S group pre-and postoperatively. With respect to HRQOL results, the final NDI was 12.46 ± 9.11% in the low CSVA/T1S group, which was significantly lower than that in the high CSVA/T1S group (17.68 ± 8.81%, P = 0.040). Moreover, only CSVA/T1S was detected to be significantly correlated with final NDI (r = 0.310, P = 0.027). No significant correlation was found between clinical results and other cervical sagittal parameters, including T1S, CSVA, and T1S-CL.ConclusionsPreoperative CSVA/T1S was correlated with postoperative NDI in patients with CSM after cervical laminoplasty. Patients with low preoperative CSVA/T1S achieved better neurological function improvement after cervical laminoplasty. Cervical laminoplasty could be an appropriate choice for patients with lower preoperative CSVA/T1S.
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spelling doaj.art-649c1063b4034fbabcb70f4a2d78fc2a2022-12-22T03:07:31ZengFrontiers Media S.A.Frontiers in Surgery2296-875X2022-08-01910.3389/fsurg.2022.10037571003757The discrepancy between preoperative cervical sagittal vertical axis and T1 slope predisposes inferior clinical outcomes in patients with cervical spondylotic myelopathy after cervical laminoplastyDong-Fan Wang0Dong-Fan Wang1Wei-Guo Zhu2Wei-Guo Zhu3Wei Wang4Wei Wang5Xiang-Yu Li6Xiang-Yu Li7Chao Kong8Chao Kong9Cheng-Xin Liu10Cheng-Xin Liu11Bin Shi12Bin Shi13Shi-Bao Lu14Shi-Bao Lu15Department of Orthopedics, Xuanwu Hospital, Capital Medical University, Beijing, ChinaNational Clinical Research Center for Geriatric Diseases, Xuanwu Hospital, Capital Medical University, Beijing, ChinaDepartment of Orthopedics, Xuanwu Hospital, Capital Medical University, Beijing, ChinaNational Clinical Research Center for Geriatric Diseases, Xuanwu Hospital, Capital Medical University, Beijing, ChinaDepartment of Orthopedics, Xuanwu Hospital, Capital Medical University, Beijing, ChinaNational Clinical Research Center for Geriatric Diseases, Xuanwu Hospital, Capital Medical University, Beijing, ChinaDepartment of Orthopedics, Xuanwu Hospital, Capital Medical University, Beijing, ChinaNational Clinical Research Center for Geriatric Diseases, Xuanwu Hospital, Capital Medical University, Beijing, ChinaDepartment of Orthopedics, Xuanwu Hospital, Capital Medical University, Beijing, ChinaNational Clinical Research Center for Geriatric Diseases, Xuanwu Hospital, Capital Medical University, Beijing, ChinaDepartment of Orthopedics, Xuanwu Hospital, Capital Medical University, Beijing, ChinaNational Clinical Research Center for Geriatric Diseases, Xuanwu Hospital, Capital Medical University, Beijing, ChinaDepartment of Orthopedics, Xuanwu Hospital, Capital Medical University, Beijing, ChinaNational Clinical Research Center for Geriatric Diseases, Xuanwu Hospital, Capital Medical University, Beijing, ChinaDepartment of Orthopedics, Xuanwu Hospital, Capital Medical University, Beijing, ChinaNational Clinical Research Center for Geriatric Diseases, Xuanwu Hospital, Capital Medical University, Beijing, ChinaObjectiveCervical sagittal parameters have been widely used to predict clinical outcomes in patients with cervical spondylotic myelopathy (CSM). This study aims to coin a novel cervical sagittal parameter defined as the ratio of cervical sagittal vertical axis to T1 slope (CSVA/T1S) and to investigate the correlation between CSVA/T1S and postoperative HRQOL after laminoplasty.MethodsA total of 102 CSM patients treated with cervical laminoplasty from our database were retrospectively reviewed. All patients were followed up for >12 months. Radiological parameters were measured using lateral cervical radiographs, including occiput-C2 lordosis (OC2), cervical lordosis (CL), CSVA, and T1S. Clinical parameters included the Japanese Orthopedic Association (JOA) score, neck disability index (NDI), and JOA recovery rate. Patients were grouped by preoperative T1S, T1S-CL, and CSVA/T1S value, respectively. Clinical and radiological outcomes were compared between the groups.ResultsPatients with high CSVA/T1S had greater OC2 and CSVA but lower CL than those in the low CSVA/T1S group pre-and postoperatively. With respect to HRQOL results, the final NDI was 12.46 ± 9.11% in the low CSVA/T1S group, which was significantly lower than that in the high CSVA/T1S group (17.68 ± 8.81%, P = 0.040). Moreover, only CSVA/T1S was detected to be significantly correlated with final NDI (r = 0.310, P = 0.027). No significant correlation was found between clinical results and other cervical sagittal parameters, including T1S, CSVA, and T1S-CL.ConclusionsPreoperative CSVA/T1S was correlated with postoperative NDI in patients with CSM after cervical laminoplasty. Patients with low preoperative CSVA/T1S achieved better neurological function improvement after cervical laminoplasty. Cervical laminoplasty could be an appropriate choice for patients with lower preoperative CSVA/T1S.https://www.frontiersin.org/articles/10.3389/fsurg.2022.1003757/fullcervical sagittal vertical axist1 slopecervical laminoplastyclinical outcomessagittal alignment
spellingShingle Dong-Fan Wang
Dong-Fan Wang
Wei-Guo Zhu
Wei-Guo Zhu
Wei Wang
Wei Wang
Xiang-Yu Li
Xiang-Yu Li
Chao Kong
Chao Kong
Cheng-Xin Liu
Cheng-Xin Liu
Bin Shi
Bin Shi
Shi-Bao Lu
Shi-Bao Lu
The discrepancy between preoperative cervical sagittal vertical axis and T1 slope predisposes inferior clinical outcomes in patients with cervical spondylotic myelopathy after cervical laminoplasty
Frontiers in Surgery
cervical sagittal vertical axis
t1 slope
cervical laminoplasty
clinical outcomes
sagittal alignment
title The discrepancy between preoperative cervical sagittal vertical axis and T1 slope predisposes inferior clinical outcomes in patients with cervical spondylotic myelopathy after cervical laminoplasty
title_full The discrepancy between preoperative cervical sagittal vertical axis and T1 slope predisposes inferior clinical outcomes in patients with cervical spondylotic myelopathy after cervical laminoplasty
title_fullStr The discrepancy between preoperative cervical sagittal vertical axis and T1 slope predisposes inferior clinical outcomes in patients with cervical spondylotic myelopathy after cervical laminoplasty
title_full_unstemmed The discrepancy between preoperative cervical sagittal vertical axis and T1 slope predisposes inferior clinical outcomes in patients with cervical spondylotic myelopathy after cervical laminoplasty
title_short The discrepancy between preoperative cervical sagittal vertical axis and T1 slope predisposes inferior clinical outcomes in patients with cervical spondylotic myelopathy after cervical laminoplasty
title_sort discrepancy between preoperative cervical sagittal vertical axis and t1 slope predisposes inferior clinical outcomes in patients with cervical spondylotic myelopathy after cervical laminoplasty
topic cervical sagittal vertical axis
t1 slope
cervical laminoplasty
clinical outcomes
sagittal alignment
url https://www.frontiersin.org/articles/10.3389/fsurg.2022.1003757/full
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