摘要
目的:评估一种一种新型椎体后凸成型术的临床操作可行性及力学测试。方法:将16个新鲜椎体标本(T12-L3)随机分为2组,模拟临床手术操作进行椎体强化,一组采用新型椎体后凸成型术,另一组采用传统注射式椎体成型术,并对强化后的椎体进行力学测试,观察骨水泥的渗漏率、强化后伤椎的强度和刚度。结果:新型椎体后凸成型术组没有出现骨水泥渗漏,传统注射式椎体成型术组有2例出现骨水泥渗漏。新型椎体后凸成型术组术后伤椎的强度和刚度分别为(3457.4±653.7)N和(787.5±283.6)N/mm,传统注射式椎体成型术后伤椎的强度和刚度分别为(2584.2±414.3)N和(524.4±157.4)N/mm,新型椎体后凸成型术术后伤椎强度和刚度的恢复明显优于传统注射式椎体成型术。结论:采用新型囊袋状的扩张器行椎体后凸成型术可以明显降低骨水泥的渗漏率,可以明显恢复伤椎的强度和刚度,新型囊袋状式椎体后凸成型术是治疗胸腰椎骨折一种有效方法。
Objective：To evaluate the feasibility and mechanical testing of a novel kyphoplasty. Methods：16 fresh vertebral body specimens （TI2-L3） were randomly divided into two groups and simulated surgical procedure of vertebral augmentation were carried out. Novel kyphoplasty was adopted in group one and traditional vertebroplasty in another group, and mechanical tests were performed strengthen after vertebral augmentations. Bone cement leakage rate, strength and stiffness of vertebral body augmentated were observaed. Results：No bone cement leakage appear in the novel kyphoplasty group, however, there was 2 cases in traditional vertebroplasty group. The strength and stiffness of vertebral injury after augmentation were （3457.4 ± 653.7） N and （787.5±283.6） N /mm in novel kyphoplasty kyphoplasty group and （2584.2± 414.3） N and （524.4 ± 157.4） N /mm in traditional vertebroplasty group, respectively. The strength and stiffness restored of injured vertebral after augmentation in the novel kyphoplasty group were superior to that of in traditional vertebroplasty group.Conclusion：Novel kyphoplasty could significantly reduce bone cement leakage rate, and restore obviously the strength and stiffness of vertebral injury. So it was an effective method for thoracolumbar fractures.
出处
《现代生物医学进展》
CAS
2010年第5期910-912,共3页
Progress in Modern Biomedicine
关键词
椎体后凸成型
胸腰椎骨折
生物力学
Kyphoplasty, Thoracolumbar Vertebral Fractures, Biomechanics
