摘要
目的对双凤尾钢板治疗胸腰椎爆裂骨折进行生物力学评价和临床应用观察。方法取成年男性尸体脊柱标本(T12-L2),制成8具L1椎体爆裂骨折模型。按实际手术方法放置双凤尾钢板。对试件分别进行轴向和弯曲扭转加载测试。临床观察应用双凤尾钢板治疗胸腰椎爆裂骨折的效果。结果压缩实验和弯曲扭转实验中,各点应变值与载荷均呈线性关系。当轴向载荷达到600N或扭矩达到600N·cm时,这种线性关系未改变。弯扭矩与模型两端之间相对扭转角的增加呈线性关系。弯扭矩达到600N·cm时,扭转角只有6.26°。临床观察表明双凤尾钢板固定可靠。结论双凤尾钢板固定具有良好的稳定性,表现出高弹性,符合生物学固定的原则。值得临床推广应用。
Objective To evaluate the biomechanics and clinical effects of phoenix-bitailed plate in treating thoracolumbar vertebrae burst fracture. Methods 8 burst fracture models in thoracolumbar vertebrae were made up from adult cadaver spinal specimens (T12～L2 ). Phoenix-bitailed plates were implanted into the models as actual operation. And they were tested under the axial and torsional load. Phoenix-bitailed plates were used to treat the thoracolumbar vertebrae burst fractures. And the curative effects were observed. Results The strain value of each tested point changed linearly according as the axial or torsional load changed even if the axial load increased to 600N or the torsion reached to 600N·cm. There is linear relation between the torsion and the torsion angle. The latter was only 6.26° when the former reached to 600N·cm. The clinical observation shows that the fixation with phoenix-bitailed plate is reliable. Conclusion The clinical application of phoenix-bitailed plate is worth generalizing for the fixation with it is very fastness and has high elasticity.
出处
《医用生物力学》
EI
CAS
CSCD
2005年第1期28-31,36,共5页
Journal of Medical Biomechanics
关键词
胸腰椎
爆裂骨折
内固定器
生物力学
Thoracolumbar vertebrae
Burst fracture
Internal fixation device
Biomechanics
