拔出强度及生物力学稳定性进行统计学分析。
Pullout strength and biomechanical stability differences were compared statistically.
结果：BM G组各时期拔出强度明显高于对照组。
Results: The pull out strength of BMG group were higher than that of control group.
目的：评价下颈椎后路螺钉不同植钉方法的拔出强度。
Objective: To evaluate the pull out strength of different posterior route cervical screw implant techniques.
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