Wu Hai-Hao, Tang Tao, Yu Xiao, Pang Qing-Jiang
Department of Orthopedics, Ningbo No. 2 Hospital, Ningbo, Zhejiang, China.
J Int Med Res. 2018 Apr;46(4):1455-1460. doi: 10.1177/0300060517734687. Epub 2018 Jan 14.
Objectives This study aimed to evaluate the stability of anterior pedicle screw-plate (APSP) fixation and anterior vertebral body screw-plate (AVBSP) fixation for three-column injury in the lower cervical spine. Methods Six fresh-frozen human cadaveric specimens of the lower cervical spine were prepared. After measurement of the range of motion (ROM) in the intact state, the specimens were prepared as three-column injury models. The models were stabilized by AVBSP or APSP fixation. The ROM of the models in the two states was measured. The ROM in the two states was compared. Results The ROM of the intact state in all directions was significantly smaller than that of the AVBSP state and significantly larger than that of the APSP state. The ROM of the AVBSP state in all directions was significantly larger than that of the APSP state. Conclusions This study shows that APSP fixation can provide sufficient stability for three-column injury in the lower cervical spine. The primary stability of our models using APSP fixation is superior to that of AVBSP fixation. These results suggest that APSP can be used for three-column injury in the lower cervical spine.
目的 本研究旨在评估下颈椎三柱损伤的前路椎弓根螺钉钢板（APSP）固定和前路椎体螺钉钢板（AVBSP）固定的稳定性。方法 制备6具新鲜冷冻的下颈椎人体尸体标本。在测量完整状态下的活动范围（ROM）后，将标本制备成三柱损伤模型。通过AVBSP或APSP固定使模型稳定。测量两种状态下模型的ROM。比较两种状态下的ROM。结果 完整状态下各个方向的ROM均显著小于AVBSP状态且显著大于APSP状态。AVBSP状态下各个方向的ROM均显著大于APSP状态。结论 本研究表明，APSP固定可为下颈椎三柱损伤提供足够的稳定性。我们使用APSP固定的模型的初始稳定性优于AVBSP固定。这些结果提示，APSP可用于下颈椎三柱损伤。
