英语语法分析

Lateral mass screws are traditionally used to fixate the subaxial cervical spine, while pedicle screws are used in the thoracic spine.

侧块螺钉习惯上用于下位颈椎的固定，而椎弓根螺钉用于胸椎。

Objective To determine whether reduction and plate fixation through anterior approach is effective in the treatment of distractive flexion (DF) injuries of the subaxial cervical spine.

目的利用前路手术复位、固定治疗颈椎屈曲牵张性(DF)损伤，总结其临床疗效并探讨其适应证。

Objective: Cortex thicknesses of subaxial cervical pedicle entrys circumferential structures were measured on planar ct images to provide quantitative data for cervical pedicle screw insertion.

目的：对下颈椎椎弓根四壁及入口毗邻结构的皮质厚度行影像学测量，为临床椎弓根钉植入提供参考。