BMD of bone will directly affect the intensity (measured by pullout strength) of screw.
3、骨密度的大小直接影响螺钉内固定的强度(以拔出力的大小衡量)。
参考来源 - 椎弓根螺钉于骨矿量下降椎体中应用的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Pullout strength and biomechanical stability differences were compared statistically.
拔出强度及生物力学稳定性进行统计学分析。
Quantitative analysis of misplaced pedicle screws in the thoracic spine: how much pullout strength is lost?
位置不良胸椎椎弓根螺钉拔出力量化研究：究竟损失了多少？
Summary of Background Data. Pullout strength of a pedicle screw increases as the diameter of the screw gets larger.
背景资料概要：当椎弓根螺钉直径增加椎弓根螺钉的拔出力也会增加。
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