空心侧孔螺钉联合骨水泥强化术对椎体生物力学影响的有限元分析  

A finite element analysis of biomechanical effects of fenestrated screws with bone cement strengthening on the vertebrae

作　　者：任亚楠 张泓 韩剑英 都承斐 杨强[2] REN Yanan;ZHANG Hong;HAN Jianying;DU Chengfei;YANG Qiang(Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control,School of Mechanical Engineering,Tianjin University of Technology,Tianjin 300384,China;Tianjin Hospital,Tianjin 300211,China)

机构地区：[1]天津理工大学机械工程学院天津市先进机电系统设计与智能控制重点实验室,天津300384 [2]天津医院,天津300211

出　　处：《天津理工大学学报》2024年第6期128-133,共6页Journal of Tianjin University of Technology

基　　金：国家重点研发计划(2020YFC107402);国家自然科学基金(81871782);天津市杰出青年科学基金(18JCJQJC47900);国家骨科、运动医学与康复临床研究中心临床应用医学创新基金(2021-NCRC-CXJJ-ZH-22)。

摘　　要：为了评估空心侧孔螺钉联合骨水泥强化术对椎体生物力学的影响,对骨质疏松椎体压缩性骨折后,通过有限元法分别建立椎体成形术模型(vertebroplasty finite element modle,VFEM)、单侧空心侧孔螺钉联合骨水泥强化椎体的模型(unilateral anchor combined with cement,UA+Cement)和双侧空心侧孔螺钉联合骨水泥强化椎体的模型(bilateral anchors combined with cement,BA+Cement),对比三组模型的椎体应力的大小,分析空心侧孔螺钉对椎体的生物力学影响。结果表明:三组模型对比中,BA+Cement组的椎体应力降低最为显著,而UA+Cement组的椎体应力在一些姿态下较其他两组明显增加。因此,BA+Cement组中椎体应力水平明显低于其他两组,有效降低了术后椎体再骨折和骨水泥松动的风险。To evaluate the effect of new cement anchor combined with cement strengthening on postoperative vertebrae biomechanics,the method of establishment of vertebroplasty finite element model(VFEM),unilateral anchor combined with bone cement reinforcement model(UA+Cement) and bilateral anchor combined with bone cement reinforcement model(BA+Cement) is used.By comparing the vertebrae stress of the three models,and analyze the biomechanical impact of the new anchor on the vertebrae,get the result of the stress of vertebrae in BA+Cement group decreased most significantly.In contrast,the vertebral stress in the UA+Cement group was significantly increased in some postures compared to other groups.So,the levels of vertebral stress in the BA+Cement group were significantly lower than those in the other two groups,effectively reducing the risk of postoperative vertebral re-fracture and cement loosening.

关 键 词：椎体成形术 空心侧孔螺钉 骨水泥 骨质疏松椎体压缩性骨折 生物力学 

分 类 号：R318.01[医药卫生—生物医学工程]