Variation in Global Spinal Sagittal Parameters in Asymptomatic Adults with 11 Thoracic Vertebrae, four Lumbar Vertebrae, and six Lumbar Vertebrae
Objective To investigate the prevalence of 11 thoracic vertebrae (TVs), four lumbar vertebrae (LVs) and six LVs among asymptomatic Chinese volunteers, and the influence of spine variations on the global spinal sagittal parameters. Methods A total of 389 asymptomatic Chinese volunteers were recruited...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-02-01
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| Series: | Orthopaedic Surgery |
| Subjects: | |
| Online Access: | https://doi.org/10.1111/os.13185 |
| _version_ | 1818289729612808192 |
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| author | Ying‐zhao Yan Ben Wang Xiao‐qin Huang Xuanliang Ru Xiang‐yang Wang Hang‐bo Qu |
| author_facet | Ying‐zhao Yan Ben Wang Xiao‐qin Huang Xuanliang Ru Xiang‐yang Wang Hang‐bo Qu |
| author_sort | Ying‐zhao Yan |
| collection | DOAJ |
| description | Objective To investigate the prevalence of 11 thoracic vertebrae (TVs), four lumbar vertebrae (LVs) and six LVs among asymptomatic Chinese volunteers, and the influence of spine variations on the global spinal sagittal parameters. Methods A total of 389 asymptomatic Chinese volunteers were recruited. Each subject underwent a full‐spine X‐ray examination with measurement of global spinal sagittal parameters. The radiographs were examined by a spine surgeon and a radiologist to determine the variation in the number of vertebrae. These parameters were used to compare individuals with five LVs to those with 11 TVs, four LVs, and six LVs. Results The study population included 12 individuals (3.1%) with seven cervical vertebrae (C) + 11 thoracic vertebrae (T) + five lumbar vertebrae (L), 8 (2.1%) with 7C + 11T + 6L, 8 (2.1%) with 7C + 12T + 4L, and 15 (3.9%) with 7C + 12T + 6L. Compared to the 7C + 12T + 5L individuals, those with 7C + 11T + 5L had significantly lower C6–T5 Cobb values (P < 0.05); 7C + 12T + 4L individuals had significantly greater thoracic inlet angles (P < 0.05) and significantly lower pelvic tilt (P < 0.05); individuals with 7C + 12T + 6L had significantly greater sacral slope, pelvic tilt, pelvic incidence, and L1–5 Cobb values (all P < 0.05), but significantly lower thoracic inlet angle (P < 0.05). There were no significant differences in any of the parameters examined between the 7C + 11T + 6L group and the 7C + 12T + 5L group. Conclusions Asymptomatic adults with 7C + 12T + 6L, 7C + 12T + 4L, and 7C + 11T + 5L presented with different spinal sagittal alignment compared to those with 7C + 12T + 5L. Compared to variation in the number of LVs, the variation in the number of TVs had less effect on global spinal sagittal parameters. Spinal surgeons and researchers should be aware of the effects of variation in numbers of TVs and LVs on global spinal parameters and sagittal balance. |
| first_indexed | 2024-12-13T02:16:54Z |
| format | Article |
| id | doaj.art-7b8b3163459e4f6d942e7cfdd5d102ba |
| institution | Directory Open Access Journal |
| issn | 1757-7853 1757-7861 |
| language | English |
| last_indexed | 2024-12-13T02:16:54Z |
| publishDate | 2022-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Orthopaedic Surgery |
| spelling | doaj.art-7b8b3163459e4f6d942e7cfdd5d102ba2022-12-22T00:02:51ZengWileyOrthopaedic Surgery1757-78531757-78612022-02-0114234134810.1111/os.13185Variation in Global Spinal Sagittal Parameters in Asymptomatic Adults with 11 Thoracic Vertebrae, four Lumbar Vertebrae, and six Lumbar VertebraeYing‐zhao Yan0Ben Wang1Xiao‐qin Huang2Xuanliang Ru3Xiang‐yang Wang4Hang‐bo Qu5Department of Orthopaedic Surgery Zhejiang Hospital Zhejiang ChinaDepartment of Orthopaedic Surgery The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Spine Surgery Centre Zhejiang ChinaDepartment of Orthopaedic Surgery Zhejiang Hospital Zhejiang ChinaDepartment of Orthopaedic Surgery Zhejiang Hospital Zhejiang ChinaDepartment of Orthopaedic Surgery The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Zhejiang Spine Surgery Centre Zhejiang ChinaDepartment of Orthopaedic Surgery Zhejiang Hospital Zhejiang ChinaObjective To investigate the prevalence of 11 thoracic vertebrae (TVs), four lumbar vertebrae (LVs) and six LVs among asymptomatic Chinese volunteers, and the influence of spine variations on the global spinal sagittal parameters. Methods A total of 389 asymptomatic Chinese volunteers were recruited. Each subject underwent a full‐spine X‐ray examination with measurement of global spinal sagittal parameters. The radiographs were examined by a spine surgeon and a radiologist to determine the variation in the number of vertebrae. These parameters were used to compare individuals with five LVs to those with 11 TVs, four LVs, and six LVs. Results The study population included 12 individuals (3.1%) with seven cervical vertebrae (C) + 11 thoracic vertebrae (T) + five lumbar vertebrae (L), 8 (2.1%) with 7C + 11T + 6L, 8 (2.1%) with 7C + 12T + 4L, and 15 (3.9%) with 7C + 12T + 6L. Compared to the 7C + 12T + 5L individuals, those with 7C + 11T + 5L had significantly lower C6–T5 Cobb values (P < 0.05); 7C + 12T + 4L individuals had significantly greater thoracic inlet angles (P < 0.05) and significantly lower pelvic tilt (P < 0.05); individuals with 7C + 12T + 6L had significantly greater sacral slope, pelvic tilt, pelvic incidence, and L1–5 Cobb values (all P < 0.05), but significantly lower thoracic inlet angle (P < 0.05). There were no significant differences in any of the parameters examined between the 7C + 11T + 6L group and the 7C + 12T + 5L group. Conclusions Asymptomatic adults with 7C + 12T + 6L, 7C + 12T + 4L, and 7C + 11T + 5L presented with different spinal sagittal alignment compared to those with 7C + 12T + 5L. Compared to variation in the number of LVs, the variation in the number of TVs had less effect on global spinal sagittal parameters. Spinal surgeons and researchers should be aware of the effects of variation in numbers of TVs and LVs on global spinal parameters and sagittal balance.https://doi.org/10.1111/os.1318511 thoracic vertebraeFour lumbar vertebraeChinese asymptomatic volunteerSagittal alignment parameterSpine variations |
| spellingShingle | Ying‐zhao Yan Ben Wang Xiao‐qin Huang Xuanliang Ru Xiang‐yang Wang Hang‐bo Qu Variation in Global Spinal Sagittal Parameters in Asymptomatic Adults with 11 Thoracic Vertebrae, four Lumbar Vertebrae, and six Lumbar Vertebrae Orthopaedic Surgery 11 thoracic vertebrae Four lumbar vertebrae Chinese asymptomatic volunteer Sagittal alignment parameter Spine variations |
| title | Variation in Global Spinal Sagittal Parameters in Asymptomatic Adults with 11 Thoracic Vertebrae, four Lumbar Vertebrae, and six Lumbar Vertebrae |
| title_full | Variation in Global Spinal Sagittal Parameters in Asymptomatic Adults with 11 Thoracic Vertebrae, four Lumbar Vertebrae, and six Lumbar Vertebrae |
| title_fullStr | Variation in Global Spinal Sagittal Parameters in Asymptomatic Adults with 11 Thoracic Vertebrae, four Lumbar Vertebrae, and six Lumbar Vertebrae |
| title_full_unstemmed | Variation in Global Spinal Sagittal Parameters in Asymptomatic Adults with 11 Thoracic Vertebrae, four Lumbar Vertebrae, and six Lumbar Vertebrae |
| title_short | Variation in Global Spinal Sagittal Parameters in Asymptomatic Adults with 11 Thoracic Vertebrae, four Lumbar Vertebrae, and six Lumbar Vertebrae |
| title_sort | variation in global spinal sagittal parameters in asymptomatic adults with 11 thoracic vertebrae four lumbar vertebrae and six lumbar vertebrae |
| topic | 11 thoracic vertebrae Four lumbar vertebrae Chinese asymptomatic volunteer Sagittal alignment parameter Spine variations |
| url | https://doi.org/10.1111/os.13185 |
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