背景数据摘要：在一些文献中研究的寰椎骨折重复出现。
Summary of Background Data. Atlas fractures have been reproduced in some studies in the literature.
目的评价CT重建技术在寰枢椎病变诊断及治疗观察中的应用。
Purpose To evaluate the clinical usefulness of CT multiplan reconstruction in the atlas and axis disease.
目的评价MRI在诊断寰枢椎失稳中的价值。
Objective to evaluate the value of MRI in diagnosing atlantoaxial joint instability.
前言： 目的：观察寰枢关节在三维运动中接触面积及动态观察其稳定性的变化规律。
Objectives:To assess the changes of the contact area of atlantoaxial joint during three dimensional movements and to assess the regularity of dynamic changes related to the joint stability.
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ChinaNavi has always been engaged in the pioneering work of new businesses such as satellite navigation and intelligent transportation.
目的探讨寰枢椎CT平扫及三维重建技术在临床诊断中的作用。
ObjectivesTo explore the significance of CT axial scanning (CTAS) and CT three dimensional (3D) reconstruction (CTDR) techniques in the clinical diagnosis of atlas axis region injury.
术中应用经后路通用脊柱椎弓根钉棒矫形固定系统固定，同时在寰椎后弓和枢椎椎板间大量髂骨植骨融合。
Intraoperative posterior approach general spine pedicle screw-rod orthopaedics fixation system used and iliac bone block were implanted in space of posterior atlantal arch and axial vertebral plate.
未见寰枢椎脱位及骨性破坏，颈椎稳定性良好，术中无需辅助内固定。
No atlantoaxial dislocation and bone destruction was found, and because of good cervical stability, surgery was performed without auxiliary internal fixation.
结果：120例中均采用非手术治疗，其中118例寰枢椎半脱位病人经随访取得满意效果（98 % ）。
Results:All patients underwent non-operations, there are 118 patients(98%) were achieved satisfactory results.
结论：用枢椎下关节突中点作为术中判定寰椎椎弓根螺钉进钉点的方法准确可靠。
Conclusions: the method that using the central point of C2 inferior articular process as a key anatomic landmark for determining the enter point of C1 pedicle screws is accurate and reliable.
结论：用枢椎下关节突中点作为术中判定寰椎椎弓根螺钉进钉点的方法准确可靠。
Conclusions: the method that using the central point of C2 inferior articular process as a key anatomic landmark for determining the enter point of C1 pedicle screws is accurate and reliable.
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