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KMID : 0361620160510010048
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Journal of the Korean Orthopaedic Association
2016 Volume.51 No. 1 p.48 ~ p.53
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A Comparative Analysis of Thoracic and Thoracolumbar Kyphosis between Young Men and Old Men
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강규복:Kang Kyu-Bok
안영준:Ahn Young-Joon/김용정:Kim Yong-Jung/김영배:Kim Young-Bae/고영록:Ko Young-Rok
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Abstract
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Purpose: Little is known with respect to changes in the segmental thoracic and thoracolumbar kyphosis, which are major parameters influencing sagittal balance of the spine. The authors investigated the detailed segmental changes of those parameters by ageing.
Materials and Methods: A total of 326 normal asymptomatic males were divided into 2 groups; group 1 (mean age, 21.2±1.7; n=175) and group 2 (mean age, 64.1±6.4; n=151). After taking a standing sagittal radiograph, the sagittal spinal and pelvic parameters were measured. Thoracic and thoracolumbar kyphosis were classified according to segments A, C7 UEP (upper end vertebra)?T5 UEP; B, T5 UEP?T10 UEP; C, T10 UEP?T12 LEP (lower end vertebra); and D, (T12 LEP?L2 LEP), and analyzed between 2 groups, respectively.
Results: Thoracic kyphosis (21.1°±7.7° vs. 30.0°±8.8°, p<0.001), segment B (15.8°±6.1° vs. 18.1°±7.9°, p=0.003), and segment C (5.3°±5.1° vs. 11.8°±6.5°, p<0.001) were increased in group 2. In group 2 segment A showed decreased kyphosis (12.1°±6.4° vs. 9.8°±6.4°, p=0.001). In segment D no significant difference was observed between groups.
Conclusion: Increased thoracic kyphosis was observed in the middle and lower thoracic regions. The authors provided important references of sagittal parameters to determine the expected ranges of kyphosis for a normal asymptomatic male of a given age.
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KEYWORD
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aged, sagittal, thoracic vertebrae, kyphosis
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