Objective To measure and compare the biomechanical properties of two different types of sacral screw fixation either through the superior endplate or anterior cortex.
目的测试骶骨螺钉经上终板固定技术的生物力学性能，并与经前皮质固定技术比较。
2
ABSTRACT: Objective To compare the biomechanical characteristics by designing newly manufactured cortex self tapping interlocking screw matched with interlocking nail.
目的设计与新型髓内钉相配套的双皮质自攻螺纹交锁螺钉，并对其生物力学性能进行对比研究。
3
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.