Right thoracic curvature in the normal spine
<p>Abstract</p> <p>Background</p> <p>Trunk asymmetry and vertebral rotation, at times observed in the normal spine, resemble the characteristics of adolescent idiopathic scoliosis (AIS). Right thoracic curvature has also been reported in the normal spine. If it is deter...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2011-01-01
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| Series: | Journal of Orthopaedic Surgery and Research |
| Online Access: | http://www.josr-online.com/content/6/1/4 |
| _version_ | 1811262474124525568 |
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| author | Masuda Keigo Matsumoto Yoshihiro Mitsuyasu Hiromichi Harimaya Katsumi Doi Toshio Kobayakawa Kazu Iwamoto Yukihide |
| author_facet | Masuda Keigo Matsumoto Yoshihiro Mitsuyasu Hiromichi Harimaya Katsumi Doi Toshio Kobayakawa Kazu Iwamoto Yukihide |
| author_sort | Masuda Keigo |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Trunk asymmetry and vertebral rotation, at times observed in the normal spine, resemble the characteristics of adolescent idiopathic scoliosis (AIS). Right thoracic curvature has also been reported in the normal spine. If it is determined that the features of right thoracic side curvature in the normal spine are the same as those observed in AIS, these findings might provide a basis for elucidating the etiology of this condition. For this reason, we investigated right thoracic curvature in the normal spine.</p> <p>Methods</p> <p>For normal spinal measurements, 1,200 patients who underwent a posteroanterior chest radiographs were evaluated. These consisted of 400 children (ages 4-9), 400 adolescents (ages 10-19) and 400 adults (ages 20-29), with each group comprised of both genders. The exclusion criteria were obvious chest and spinal diseases. As side curvature is minimal in normal spines and the range at which curvature is measured is difficult to ascertain, first the typical curvature range in scoliosis patients was determined and then the Cobb angle in normal spines was measured using the same range as the scoliosis curve, from T5 to T12. Right thoracic curvature was given a positive value. The curve pattern was organized in each collective three groups: neutral (from -1 degree to 1 degree), right (> +1 degree), and left (< -1 degree).</p> <p>Results</p> <p>In child group, Cobb angle in left was 120, in neutral was 125 and in right was 155. In adolescent group, Cobb angle in left was 70, in neutral was 114 and in right was 216. In adult group, Cobb angle in left was 46, in neutral was 102 and in right was 252. The curvature pattern shifts to the right side in the adolescent group (p < 0.01) and in adult group (p < 0.001) compared to the child group. There was no significant difference in curvature pattern between adolescent and adult group.</p> <p>Conclusions</p> <p>Based on standing chest radiographic measurements, a right thoracic curvature was observed in normal spines after adolescence.</p> |
| first_indexed | 2024-04-12T19:26:11Z |
| format | Article |
| id | doaj.art-4171259369ed4ff49f6f563d8c2d0923 |
| institution | Directory Open Access Journal |
| issn | 1749-799X |
| language | English |
| last_indexed | 2024-04-12T19:26:11Z |
| publishDate | 2011-01-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Orthopaedic Surgery and Research |
| spelling | doaj.art-4171259369ed4ff49f6f563d8c2d09232022-12-22T03:19:28ZengBMCJournal of Orthopaedic Surgery and Research1749-799X2011-01-0161410.1186/1749-799X-6-4Right thoracic curvature in the normal spineMasuda KeigoMatsumoto YoshihiroMitsuyasu HiromichiHarimaya KatsumiDoi ToshioKobayakawa KazuIwamoto Yukihide<p>Abstract</p> <p>Background</p> <p>Trunk asymmetry and vertebral rotation, at times observed in the normal spine, resemble the characteristics of adolescent idiopathic scoliosis (AIS). Right thoracic curvature has also been reported in the normal spine. If it is determined that the features of right thoracic side curvature in the normal spine are the same as those observed in AIS, these findings might provide a basis for elucidating the etiology of this condition. For this reason, we investigated right thoracic curvature in the normal spine.</p> <p>Methods</p> <p>For normal spinal measurements, 1,200 patients who underwent a posteroanterior chest radiographs were evaluated. These consisted of 400 children (ages 4-9), 400 adolescents (ages 10-19) and 400 adults (ages 20-29), with each group comprised of both genders. The exclusion criteria were obvious chest and spinal diseases. As side curvature is minimal in normal spines and the range at which curvature is measured is difficult to ascertain, first the typical curvature range in scoliosis patients was determined and then the Cobb angle in normal spines was measured using the same range as the scoliosis curve, from T5 to T12. Right thoracic curvature was given a positive value. The curve pattern was organized in each collective three groups: neutral (from -1 degree to 1 degree), right (> +1 degree), and left (< -1 degree).</p> <p>Results</p> <p>In child group, Cobb angle in left was 120, in neutral was 125 and in right was 155. In adolescent group, Cobb angle in left was 70, in neutral was 114 and in right was 216. In adult group, Cobb angle in left was 46, in neutral was 102 and in right was 252. The curvature pattern shifts to the right side in the adolescent group (p < 0.01) and in adult group (p < 0.001) compared to the child group. There was no significant difference in curvature pattern between adolescent and adult group.</p> <p>Conclusions</p> <p>Based on standing chest radiographic measurements, a right thoracic curvature was observed in normal spines after adolescence.</p>http://www.josr-online.com/content/6/1/4 |
| spellingShingle | Masuda Keigo Matsumoto Yoshihiro Mitsuyasu Hiromichi Harimaya Katsumi Doi Toshio Kobayakawa Kazu Iwamoto Yukihide Right thoracic curvature in the normal spine Journal of Orthopaedic Surgery and Research |
| title | Right thoracic curvature in the normal spine |
| title_full | Right thoracic curvature in the normal spine |
| title_fullStr | Right thoracic curvature in the normal spine |
| title_full_unstemmed | Right thoracic curvature in the normal spine |
| title_short | Right thoracic curvature in the normal spine |
| title_sort | right thoracic curvature in the normal spine |
| url | http://www.josr-online.com/content/6/1/4 |
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