天鹅型记忆接骨器治疗肱骨骨折的生物力学研究  

Biomechanical study of swan-like memory compressive connector(SMC) for treatment of humeral fracture

作　　者：万岷[1] 张春才[1] 许硕贵[1] 付青格[1] 王冠军[1] 王以进[2] 

机构地区：[1]第二军医大学附属长海医院骨科,上海200433 [2]上海大学生物力学工程研究所,上海201800

出　　处：《医用生物力学》2005年第2期97-100,共4页Journal of Medical Biomechanics

基　　金：上海市科学技术委员会科研计划项目(03JC14008)

摘　　要：目的阐明天鹅型记忆接骨器(swan-like memory compressive connector,SMC)应用于肱骨骨折治疗的生物力学基础。方法通过轴向拉伸试验、三点弯曲试验、扭转试验三种生物力学测试方法建模,对比分析肱骨中段骨折天鹅型记忆接骨器和8孔钢板治疗的生物力学稳定性。结果轴向拉伸试验得出载荷-应变曲线及拉伸强度,加载1000N时的SMC与钢板固定的强度分别为2.21MPa和2.35MPa,两组之间差异无统计学意义(P>0.05);测定位移与刚度得出载荷-位移曲线及轴向刚度,加载1000N时的SMC与钢板固定的轴向刚度分别为465N/mm和424N/mm,两组之间差异无统计学意义(P>0.05);三点弯曲试验得出弯矩-挠度曲线及弯曲刚度,弯矩在5N·m时SMC固定组与钢板固定组的刚度分别为18.59N·cm/(°)和17.84N·cm/(°),两组之间差异无统计学意义(P>0.05);扭转试验得出扭矩-扭角曲线及扭转刚度,SMC固定组与钢板固定组在最大扭矩下的扭转刚度分别为302.11N·cm/(°)和287.07N·cm/(°),两组之间差异无统计学意义(P>0.05)其固定的稳定性接近钢板组。结论天鹅型记忆接骨器治疗肱骨骨折具有良好的生物力学稳定性。Objective To elucidate the biomechanical foundation of Swan-like Memory Compressive Connector(SMC ) for treatment of humeral fracture. Methods To analyze the biomechanical stability of the fixed humeral fracture with SMC and eight holes plate by three methods: tension test bending test and torsion test. Results From three tests above,the relation of load-straining load-migration bending moment- deflection?torsion moment-torsion angle were drew, both of results show no statistical significant deviation. Conclusion Internal fixation of humeral fracture with SMC could have good biomechanical stability.

关 键 词：肱骨骨折 记忆接骨器 生物力学 

分 类 号：R318.01[医药卫生—生物医学工程] R687.32[医药卫生—基础医学]