Steffee钢板加前路植骨治疗前中柱脊柱损伤稳定性分析  

Staility study of the Steffee Posterior device with anterior bone graft in treating thoracolumbar injuries in anterior and middle columns

作　　者：毛作华 董健[2] 洪水棕[3] 

机构地区：[1]深圳市宝安区人民医院骨科,518101 [2]上海医科大学中山医院骨科 [3]上海交通大学力学生物力学研究室

出　　处：《广东医学》1999年第3期164-166,共3页Guangdong Medical Journal

摘　　要：目的评价后路椎弓根螺钉Steffee器械治疗脊柱前中柱损伤提供的生物力学稳定能力及前纵韧带在Steffee钢板中的作用。方法,利用传感器及电测技术，采用新鲜人体胸腰段脊柱标本，计算平均顺应系数（fs）。结果Steffee能恢复前中柱损伤的轴压、旋转稳定性，提高前屈、侧弯稳定性，前级韧带对前中柱损伤后伸、侧弯有明显力学影响。结论推荐Steffee器械治疗前中柱损伤，前纵韧带对Steffee有明显力学意义，坚强植骨是Steffee良好力学稳定性的基础。Objective To study the three - dimensonal stability of the spine injuries of different for beated bythe Steffee transpedicular screws and Plates(Steffee) with anterior bone graff . Methods Fresh cadaveric thoracolumbar speci mens were used. They weze measared by 3 - degree of freedom electrogniometer force and displacemnt transducers the rela-tive rotational and translational displacement between T11 and L1 vertbra in the bending direction . The mean flexibility (fs)was computed. Resul In anterior and middle column of spine destroyed spinal construct, Steffee could provide good stabili-ty in comprssive loading, flexion, extension, lateral bending and rotation (P < 0.05). Conclusion Steffee can increase themechanical stability of the injuried spine ; The anterior longitudinal ligament intact is good for mechanical effciency of Setffee;Strut bone graft is he basis of the good mechanical stability of Steffee.

关 键 词：生物力学 脊柱损伤 Steffee器械 稳定性 

分 类 号：R683.205[医药卫生—骨科学] R318.01[医药卫生—外科学]