Differences in Demographic and Radiographic Characteristics between Patients with Visible and Invisible T1 Slopes on Lateral Cervical Radiographic Images
Introduction: The T1 slope is important for cervical surgical planning, and it may be invisible on radiographic images. The prevalence of T1 invisible cases and the differences in demographic and radiographic characteristics between patients whose T1 slopes are visible or invisible remains unexplore...
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MDPI AG
2022-01-01
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| Series: | Journal of Clinical Medicine |
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| Online Access: | https://www.mdpi.com/2077-0383/11/2/411 |
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| author | Sadayuki Ito Hiroaki Nakashima Akiyuki Matsumoto Kei Ando Masaaki Machino Naoki Segi Hiroyuki Tomita Hiroyuki Koshimizu Shiro Imagama |
| author_facet | Sadayuki Ito Hiroaki Nakashima Akiyuki Matsumoto Kei Ando Masaaki Machino Naoki Segi Hiroyuki Tomita Hiroyuki Koshimizu Shiro Imagama |
| author_sort | Sadayuki Ito |
| collection | DOAJ |
| description | Introduction: The T1 slope is important for cervical surgical planning, and it may be invisible on radiographic images. The prevalence of T1 invisible cases and the differences in demographic and radiographic characteristics between patients whose T1 slopes are visible or invisible remains unexplored. Methods: This pilot study aimed to evaluate the differences in these characteristics between outpatients whose T1 slopes were visible or invisible on radiographic images. Patients (<i>n</i> = 60) who underwent cervical radiography, whose T1 slope was confirmed clearly, were divided into the visible (V) group and invisible (I) group. The following radiographic parameters were measured: (1) C2-7 sagittal vertical axis (SVA), (2) C2-7 angle in neutral, flexion, and extension positions. Results: Based on the T1 slope visibility, 46.7% of patients were included in group I. The I group had significantly larger C2-7 SVA than the V group for males (<i>p</i> < 0.05). The C2-7 SVA tended to be larger in the I group, without significant difference for females (<i>p</i> = 0.362). Discussion: The mean C2-7 angle in neutral and flexion positions was not significantly different between the V and I groups for either sex. The mean C2-7 angle in the extension position was greater in the V group. The T1 slope was invisible in males with high C2-7 SVA. |
| first_indexed | 2024-03-10T01:13:44Z |
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| issn | 2077-0383 |
| language | English |
| last_indexed | 2024-03-10T01:13:44Z |
| publishDate | 2022-01-01 |
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| series | Journal of Clinical Medicine |
| spelling | doaj.art-f571f70ad31f441abe8e948898114e612023-11-23T14:13:32ZengMDPI AGJournal of Clinical Medicine2077-03832022-01-0111241110.3390/jcm11020411Differences in Demographic and Radiographic Characteristics between Patients with Visible and Invisible T1 Slopes on Lateral Cervical Radiographic ImagesSadayuki Ito0Hiroaki Nakashima1Akiyuki Matsumoto2Kei Ando3Masaaki Machino4Naoki Segi5Hiroyuki Tomita6Hiroyuki Koshimizu7Shiro Imagama8Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, JapanDepartment of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, JapanDepartment of Orthopedic Surgery, Okazaki City Hospital, Okazaki 444-8553, JapanDepartment of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, JapanDepartment of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, JapanDepartment of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, JapanDepartment of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, JapanDepartment of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, JapanDepartment of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya 466-8560, JapanIntroduction: The T1 slope is important for cervical surgical planning, and it may be invisible on radiographic images. The prevalence of T1 invisible cases and the differences in demographic and radiographic characteristics between patients whose T1 slopes are visible or invisible remains unexplored. Methods: This pilot study aimed to evaluate the differences in these characteristics between outpatients whose T1 slopes were visible or invisible on radiographic images. Patients (<i>n</i> = 60) who underwent cervical radiography, whose T1 slope was confirmed clearly, were divided into the visible (V) group and invisible (I) group. The following radiographic parameters were measured: (1) C2-7 sagittal vertical axis (SVA), (2) C2-7 angle in neutral, flexion, and extension positions. Results: Based on the T1 slope visibility, 46.7% of patients were included in group I. The I group had significantly larger C2-7 SVA than the V group for males (<i>p</i> < 0.05). The C2-7 SVA tended to be larger in the I group, without significant difference for females (<i>p</i> = 0.362). Discussion: The mean C2-7 angle in neutral and flexion positions was not significantly different between the V and I groups for either sex. The mean C2-7 angle in the extension position was greater in the V group. The T1 slope was invisible in males with high C2-7 SVA.https://www.mdpi.com/2077-0383/11/2/411T1 slopeC2-7 SVAC2-7 angle |
| spellingShingle | Sadayuki Ito Hiroaki Nakashima Akiyuki Matsumoto Kei Ando Masaaki Machino Naoki Segi Hiroyuki Tomita Hiroyuki Koshimizu Shiro Imagama Differences in Demographic and Radiographic Characteristics between Patients with Visible and Invisible T1 Slopes on Lateral Cervical Radiographic Images Journal of Clinical Medicine T1 slope C2-7 SVA C2-7 angle |
| title | Differences in Demographic and Radiographic Characteristics between Patients with Visible and Invisible T1 Slopes on Lateral Cervical Radiographic Images |
| title_full | Differences in Demographic and Radiographic Characteristics between Patients with Visible and Invisible T1 Slopes on Lateral Cervical Radiographic Images |
| title_fullStr | Differences in Demographic and Radiographic Characteristics between Patients with Visible and Invisible T1 Slopes on Lateral Cervical Radiographic Images |
| title_full_unstemmed | Differences in Demographic and Radiographic Characteristics between Patients with Visible and Invisible T1 Slopes on Lateral Cervical Radiographic Images |
| title_short | Differences in Demographic and Radiographic Characteristics between Patients with Visible and Invisible T1 Slopes on Lateral Cervical Radiographic Images |
| title_sort | differences in demographic and radiographic characteristics between patients with visible and invisible t1 slopes on lateral cervical radiographic images |
| topic | T1 slope C2-7 SVA C2-7 angle |
| url | https://www.mdpi.com/2077-0383/11/2/411 |
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