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KMID : 1001920150570040276
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Journal of Korean Neurosurgical Society
2015 Volume.57 No. 4 p.276 ~ p.282
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Quantification of Pediatric Cervical Spine Growth at the Cranio-Vertebral Junction
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Lee Ho-Jin
Kim Jong-Tae
Shin Myoung-Hoon
Choi Doo-Yong
Hong Jae-Taek
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Abstract
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Objective: The purpose of this study was to investigate morphological change at the craniovertebral junction (CVJ) region using computed tomography.
Methods: A total of 238 patients were included in this study, and mean age was 47.8÷21.3 months. Spinal canal diameter, Power’s ratio, McRae line, antero-posterior C1 ring height, atlantoaxial joint space, C2 growth, epidural space from the dens (M-PB-C2) and longitudinal distance (basion to C2 lower margin, B-C2) were measured. The mean value of each parameter was assessed for individual age groups. The cohorts were then divided into three larger age groups : infancy (I) (●2 years), very early (VE) childhood (2쭯5 years) and early (E) childhood (5◎ years).
Results: Spinal canal diameter increased with age; however, this value did not increase with statistical significance after VE age. A significant age-related difference was found for all C2 body and odontoid parameters (p<0.05). Mean McRae line was 8.5, 8, and 7.5 mm in the I, VE, and E groups, respectively. The M-PB-C2 line showed up-and-down dynamic change during early pediatric periods.
Conclusion: Expansion of the spinal canal was restricted to the very early childhood period (less than 5 years) in the CVJ region; however, the C2 body and odontoid process increased continuously with age. The above results induced a dynamic change in the M-PB-C2 line. Although C2 longitudinal growth continued with age, the McRae line showed relatively little change.
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KEYWORD
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Craniovertebral junction, Computed tomography, Childhood
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