Vectra-T动态钢板治疗颈椎病的早期疗效研究

目的探讨使用颈椎前路Vectra-T动态钢板加钛网治疗颈椎病的疗效。方法回顾性分析2010年6月~2012年10月在四川大学华西医院骨科收治的20例（44个节段）行颈椎前路椎体切除减压、钛网植骨、Vectra-T钢板内固定术的颈椎病患者。疗效考核采用JOA评分、颈椎曲度、椎体间植骨融合和钛网下沉情况等指标,统计分析采用SPSS 19.0软件。结果纳入的20例患者随访时间为12~30个月。统计分析结果显示：1所有患者JOA评分在术前为7.68±1.66分,术后为10.91±1.97分,末次随访时为12.74±1.27分,其差异有统计学意义（P〈0.05）。2所有患者术后无钢板、螺钉断裂或松动现象发生;术后融合节段前曲度、颈椎整体前曲度较术前均有改善。44个融合节段中,43个节段6个月内融合,1个节段延迟至术后12个月时方融合。3术后3月融合节段钛网下沉平均为2.7±2.7 mm,术后6月钛网下沉为3.6±1.0 mm,术后12月钛网下沉为3.9±1.2 mm,末次随访时钛网下沉为4.0±1.2 mm。钛网下沉主要集中在术后6月内,6月后钛网下沉不再明显。结论应用Vectra-T动态钢板可有效改善颈椎矢状位的曲度,防止后凸畸形,降低植骨后相关并发症的发生,有效避免静态钢板造成的应力遮挡,促进颈椎椎体间的融合。但其远期疗效仍待大样本长期随访的随机对照研究进一步证实。

Study on Early Effects of Vectra-T Dynamic Plate for Cervical Spondylosis

Objective To study the efficacy of anterior cervical Vectra-t dynamic plate and titanium mesh for cer- vical spondylosis. Methods A retrospectively analysis involving 20 cases （44 sections） from June 2010 to October 2012 was performed in the department of orthopaedic in the West China Hospital of Sichuan University. All patients received the operation of anterior cervical vertebral resection decompression, titanium mesh and bone graft, and Vectra-T plate. The data of the JOA scores, cervical curvature, the conditions of vertebral body fusion after bone graft and the situation of titanium mesh subsidence were all collected. Statistical analysis were performed using SPSS 19.0 software. Results a） All the 20 cases received a 12- to 30-month follow-up. The results of statistical analysis showed that： the JOA scores were as follows： 7.68± 1.66 for preoperative, 10.91± 1.97 for after surgery and 12.74± 1.27 for the endpoint of follow-up, and signifi - cant differences were found between these scores （P〈0.05）. b） There was no loose of screw or plate. The local cervical angle and regional cervical angle were improved after surgery. In the 44 segments of fusion, 43 segments fused within 6 months, one of the segment delayed to fuse 12 months after surgery, c） The subsidence of titanium mesh were 2.7±2.7 mm on av- erage in 3 months after surgery, 3.6±1.0 mm on average in 6 months after surgery, 3.9±1.2 mm on average in 12 months after surgery and 4.0±1.2 mm on average in last follow-up. Titanium mesh subsidence mainly concentrated in the post- operative period of 6 months. After six months of titanium mesh subsidence was no longer apparent. Conclusion The application of Vectra-T dynamic plate can effectively improve the curvature of the cerical sagittal position, prevent pro- trusion deformity, reduce the related complications after bone graft, effectively avoid the stress shelter in the static plate, and promote the fusion between the cervical vertebral bodies. However, the long-term curative eff