... Head of first rib 第一肋骨头 Posterior arch of atlas 寰椎后弓 Laminae of vertebral arches C III and C IV 第三四颈椎椎弓板 ...
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后路寰椎螺钉固定包括寰椎侧块螺钉和寰椎后弓侧块螺钉固定。
Posterior screw fixation on atlas includes posterior screw fixation within lateral mass of atlas and in atlas via posterior arch and lateral mass.
目的评估经寰椎后弓侧块螺钉固定应用于上颈椎损伤的价值和作用。
Objective To evaluate the effectiveness of internal fixation via the posterior bow side mass of atlas for the treatment of the upper cervical spine injuries.
结果：（1）寰椎后弓较纤弱，横截面呈扇形，内侧面从后上方向内下方倾斜；
Results: (1) The posterior arch of atlas was thin with a fan-shape section, whose inner plane descended from back to inside.
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