Chinese Journal of Clinical Anatomy >
The digital morphological study of lower cervical pedicle in children
Received date: 2014-03-07
Online published: 2014-12-04
Objective To explore morphological characteristic and developmental pattern of pedicles in lower cervical vertebrae in children for pedicle screw fixation. Methods MSCT data of cervical vertebrae were collected from 60 healthy children aged 4～12 years old. Children with an interval of three years were included in one group. There 20 children in each group. . The data were imported into Mimics for 3D image reconstruction the pedicle width (PW), pedicle height (PH), the entire of pedicle osseous channel (POCL), External deflection angle( e angle) and tail deflection angle (f angle) of C3~C7 were measured and he PW / PH (I value) were calculated. Statistical analysis was performed by age group and segment. Results PW, PH, POCL and e angle generally showed an increasing trend with increasing age. PW, PH and POCL of each vertebra in 10~12 years old group had differences with 6~9 years old group and 4~6 years old group (P＜0.05), e and f angle had little difference between the different age groups. PW in each group showed a gradually increasing trend. PH, POCL and e angle had little difference between different vertebrae in each group. f angle had significant differences in each group, showing a gradient from a positive value to a negative values f angle of C7 was the maximally negative in value. I value generally showed decreasing trend with increasing age. I value of C3~C7 changed from ＞1.0 to ＜1.0 in different groups; it had no difference between different vertebrae in each group (P＞0.05). Conclusion The developmental pattern in pedicles of different segment is obvious, but there are individual differences. According to the cervical pedicle morphology, pedicle-screw technique in lower cervical pedicle of larger than 4 years old children is feasible.
Key words： Lower cervical; Pedicle; Digital measurement; Children
ZHANG Shao-Jie , WANG Xing , LI Zhi-Jun , ZHANG Yuan-Zhi , GAO Chang , WANG Zhi-Jiang . The digital morphological study of lower cervical pedicle in children[J]. Chinese Journal of Clinical Anatomy, 2014 , 32(6) : 662 -665 . DOI: 10.13418/j.issn.1001-165x.201
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