摘要
目的报告自行设计的钛合金椎体植入物(TpBA)在后方内固定重建椎体爆裂性骨折中的临床效果,并研究其生物力学特性。方法实验组以TpBA重建椎体及后方椎弓根螺钉系统固定术治疗并随访75例椎体爆裂性骨折患者,与对照组单纯后方椎弓根螺钉系统固定治疗的45例患者比较临床疗效。并用动物实验分析TpBA的生物力学特性。结果经2年以上的术后随访研究,此种重建椎体方法可有效并安全地治疗椎体爆裂性骨折,协助椎体恢复,避免固定器破坏。此外,比较植入TpBA前后塌陷椎体的稳定度,可发现在压缩、前弯与后伸等运动中,TpBA结合后固定器可增加脊椎结构的稳定度。结论此TpBA可有效增加结构的即时刚度,有助于椎体的融合,可避免后方内固定器的损坏,是未来椎体重建的理想方法。
Objective To report a newly-designed augmenter which provides anterior support for an injured spine besides posterior stability provided by posterior instrumentation alone in treatment of the acute burst fracture. Methods The titanium alloy body augmenter （TpBA） was implanted into the collapsed vertebral body to reconstruct the body via internal mechanical support and also to promote bony fusion. Results Follow-ups of more than 2 years revealed that this augmenter could ensure restoration of vertebral bodies, prevent implant failure, and lead to clinical success. Besides, a biomechanical study was conducted to evaluate the effects of body augmenter and instrumentation on the stability of the spine-device construction. The comparison showed that the body augmenters combined with posterior instrumentation increased the spinal constructive stability during compression, flexion and extension. Conclusion The body augmenter may provide a better initial stability of construction and prevent the implant failure of posterior instrumentation and may be a feasible substitute for the anterior instrumentation in the future.
出处
《中华创伤骨科杂志》
CAS
CSCD
2005年第10期908-912,共5页
Chinese Journal of Orthopaedic Trauma
