The Use of T1 Sagittal Angle in Predicting Cervical Disc Degeneration

Study DesignRetrospective evaluation.PurposeTo analyze the effect of T1 slope on degree of degeneration in patients with cervical disc degeneration.Overview of LiteratureThe T1 slope is well known parameter that may be very useful in evaluating sagittal balance. There are no reports on the analysis...

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Main Authors: Bong-Seok Yang, Su-Keon Lee, Kyung-Sub Song, Sang-Pil Yoon, Geun Jang, Chae-Chul Lee, Seong-Hwan Moon, Hwan-Mo Lee, Seung-Hwan Lee
Format: Article
Language:English
Published: Korean Spine Society 2015-10-01
Series:Asian Spine Journal
Subjects:
Online Access:http://www.asianspinejournal.org/upload/pdf/asj-9-757.pdf
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author Bong-Seok Yang
Su-Keon Lee
Kyung-Sub Song
Sang-Pil Yoon
Geun Jang
Chae-Chul Lee
Seong-Hwan Moon
Hwan-Mo Lee
Seung-Hwan Lee
author_facet Bong-Seok Yang
Su-Keon Lee
Kyung-Sub Song
Sang-Pil Yoon
Geun Jang
Chae-Chul Lee
Seong-Hwan Moon
Hwan-Mo Lee
Seung-Hwan Lee
author_sort Bong-Seok Yang
collection DOAJ
description Study DesignRetrospective evaluation.PurposeTo analyze the effect of T1 slope on degree of degeneration in patients with cervical disc degeneration.Overview of LiteratureThe T1 slope is well known parameter that may be very useful in evaluating sagittal balance. There are no reports on the analysis of the relationship between T1 slope and cervical disc degeneration. We hypothesized that T1 slope has an effect on the degree of cervical degeneration.MethodsSixty patients who had cervical spine magnetic resonance imaging (MRI) in our orthopedic clinic were enrolled. Patients were divided into two groups according to T1 slope. Radiologic parameters obtained from radiography and cervical spine MRI were compared between low T1 slope group (≤25) and high T1 slope group (>25).ResultsAmong low T1 slope group, average degeneration grade of each cervical segment was 2.65 in C2-3, 2.50 in C3-4, 2.62 in C4-5, 3.23 in C5-6, and 2.81 in C6-7. And that of high T1 group was 2.35 in C2-3, 2.32 in C3-4, 2.59 in C4-5, 2.79 in C5-6, and 2.32 in C6-7. Grade of degeneration of low T1 group was significantly higher, as compared with high T1 group in C5-6 (p=0.028) and C6-7 (p=0.009). Percentage of high grade degeneration of more than grand III was 65.4% in low T1 group and 32.4% in high T1 group (p=0.018). Risk of high grade degeneration of C6-7 was significantly higher in low T1 group (odds ratio, 5.63; 95% confidence interval, 1.665-19.057; p=0.005).ConclusionsPatients with low T1 slope had higher grade of degeneration regardless of age and gender. Low T1 slope is a potential risk factor of cervical spondylosis especially in the C6-7 cervical segment.
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spelling doaj.art-a3731d7323aa4cb289c11d2c479770402022-12-22T02:56:49ZengKorean Spine SocietyAsian Spine Journal1976-19021976-78462015-10-019575776110.4184/asj.2015.9.5.757842The Use of T1 Sagittal Angle in Predicting Cervical Disc DegenerationBong-Seok Yang0Su-Keon Lee1Kyung-Sub Song2Sang-Pil Yoon3Geun Jang4Chae-Chul Lee5Seong-Hwan Moon6Hwan-Mo Lee7Seung-Hwan Lee8Department of Orthopaedic Surgery, Gwangmyeong Sungae Hospital, Gwangmyeong, Korea.Department of Orthopaedic Surgery, Gwangmyeong Sungae Hospital, Gwangmyeong, Korea.Department of Orthopaedic Surgery, Gwangmyeong Sungae Hospital, Gwangmyeong, Korea.Department of Orthopaedic Surgery, Gwangmyeong Sungae Hospital, Gwangmyeong, Korea.Department of Orthopaedic Surgery, Gwangmyeong Sungae Hospital, Gwangmyeong, Korea.Department of Orthopaedic Surgery, Gwangmyeong Sungae Hospital, Gwangmyeong, Korea.Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Korea.Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Korea.Department of Orthopaedic Surgery, Gwangmyeong Sungae Hospital, Gwangmyeong, Korea.Study DesignRetrospective evaluation.PurposeTo analyze the effect of T1 slope on degree of degeneration in patients with cervical disc degeneration.Overview of LiteratureThe T1 slope is well known parameter that may be very useful in evaluating sagittal balance. There are no reports on the analysis of the relationship between T1 slope and cervical disc degeneration. We hypothesized that T1 slope has an effect on the degree of cervical degeneration.MethodsSixty patients who had cervical spine magnetic resonance imaging (MRI) in our orthopedic clinic were enrolled. Patients were divided into two groups according to T1 slope. Radiologic parameters obtained from radiography and cervical spine MRI were compared between low T1 slope group (≤25) and high T1 slope group (>25).ResultsAmong low T1 slope group, average degeneration grade of each cervical segment was 2.65 in C2-3, 2.50 in C3-4, 2.62 in C4-5, 3.23 in C5-6, and 2.81 in C6-7. And that of high T1 group was 2.35 in C2-3, 2.32 in C3-4, 2.59 in C4-5, 2.79 in C5-6, and 2.32 in C6-7. Grade of degeneration of low T1 group was significantly higher, as compared with high T1 group in C5-6 (p=0.028) and C6-7 (p=0.009). Percentage of high grade degeneration of more than grand III was 65.4% in low T1 group and 32.4% in high T1 group (p=0.018). Risk of high grade degeneration of C6-7 was significantly higher in low T1 group (odds ratio, 5.63; 95% confidence interval, 1.665-19.057; p=0.005).ConclusionsPatients with low T1 slope had higher grade of degeneration regardless of age and gender. Low T1 slope is a potential risk factor of cervical spondylosis especially in the C6-7 cervical segment.http://www.asianspinejournal.org/upload/pdf/asj-9-757.pdfIntervertebral disc degenerationCervical spineT1 slopeMagnetic resonance imaging
spellingShingle Bong-Seok Yang
Su-Keon Lee
Kyung-Sub Song
Sang-Pil Yoon
Geun Jang
Chae-Chul Lee
Seong-Hwan Moon
Hwan-Mo Lee
Seung-Hwan Lee
The Use of T1 Sagittal Angle in Predicting Cervical Disc Degeneration
Asian Spine Journal
Intervertebral disc degeneration
Cervical spine
T1 slope
Magnetic resonance imaging
title The Use of T1 Sagittal Angle in Predicting Cervical Disc Degeneration
title_full The Use of T1 Sagittal Angle in Predicting Cervical Disc Degeneration
title_fullStr The Use of T1 Sagittal Angle in Predicting Cervical Disc Degeneration
title_full_unstemmed The Use of T1 Sagittal Angle in Predicting Cervical Disc Degeneration
title_short The Use of T1 Sagittal Angle in Predicting Cervical Disc Degeneration
title_sort use of t1 sagittal angle in predicting cervical disc degeneration
topic Intervertebral disc degeneration
Cervical spine
T1 slope
Magnetic resonance imaging
url http://www.asianspinejournal.org/upload/pdf/asj-9-757.pdf
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