The stability of instruments should lie enhanced by injecting bone caret into the screw holes and driving screw under terminal plate, and forming framed-structure with traverse rods in the operation.

• 结论胸椎椎弓根螺钉内固定是治疗胸椎骨折的一种有效方法，适用于老年骨质疏松症骨折患者，固定时螺钉应贴近终板下或钉孔注入骨水泥以增加螺钉的把持力，并通过横杆组成框架式结构增加椎弓根系统的强度。