自锁空心加压防旋转刀片的有限元分析  

Finite element analysis of self-locking cannulated compression anti-rotation blade

作　　者：杨明[1] 王维[2] 胡岩[3] 王奇志[2] 陈建海[1] 张殿英[1] 傅中国[1] 姜保国[1] 

机构地区：[1]北京大学人民医院创伤骨科,北京市100044 [2]北京航空航天大学航空科学与工程学院,北京市100191 [3]北京航空航天大学机械工程及自动化学院,北京市100191

出　　处：《中国组织工程研究与临床康复》2009年第13期2430-2434,共5页Journal of Clinical Rehabilitative Tissue Engineering Research

基　　金：国家十一五科技支撑计划(2007BAI04B00)"难治性骨折治疗的研究";国家重点基础研究发展规划项目(2005CB522604)"严重创伤救治与损伤组织修复的基础研究"~~

摘　　要：运用医学仿真软件Mimics 10.0对股骨的CT图像进行处理,完成了股骨曲面初步的三维重建,并运用Geomagic Studio工程逆向软件进行了股骨NURBS曲面重构,建立几何模型。模拟自锁空心加压防旋刀片固定股骨颈骨折并单腿站立时,利用有限元分析软件ANSYS 10.0进行接触分析,计算自锁空心加压防旋转刀片的应力分布和股骨的位移分布。自锁空心加压防旋刀片的最大MISES应力分布为133.179～182.417 MPa,股骨的最大位移为0.367～0.864mm。提示自锁空心加压防旋刀片固定股骨颈骨折,具有良好的稳定性。Femoral reality geometric model was created from CT images which were modified by image segmentation, refined using biomedical simulated software mimics 10.0, and femoral NURBS curves were reconstructed using automation reverse engineering software Geomagic Studio. Using finite element analysis software ANSYS 10.0 to simulate femoral neck fracture stabilized with self-locking cannulated compression anti-rotation blade at standing on one leg, calculation were performed according to contact conditions of bone-implant. The stress distribution of implant and the displacement distribution of femur were calculated. The maximum MISES stress of self-locking cannulated compression anti-rotation blade was 133.179 182.417 MPa, and the maximum displacement of femur was 0.36-70.864 mm. Self-locking cannulated compression anti-rotation blade exhibits fine fixation stability for femoral neck fracture.

关 键 词：股骨颈骨折 骨折内固定 有限元分析 

分 类 号：R318[医药卫生—生物医学工程]