Feasibility of biomechanical strength in upper cervical fixation and analysis of these screw strength

上颈椎固定生物力学强度的可行性及螺钉强度分析

• 批准号: 21591901
• 负责人: MIZUTANI Jun
• 金额: $ 2.91万
• 依托单位: Nagoya City University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21591901/
• 关键词: 環軸椎固定術; 外側塊スクリュー; 致死的合併症; 内頚動脈; 椎骨動脈; 生体力学強度; 環椎外側塊スクリュー; 軸椎椎弓根スクリュー; 環軸椎亜脱臼; 生体力学

We evaluated the pullout strength of posterior arch screw(PAS) that was our original invention to achieve safe and effective upper-cervical fixation surgery. Posterior arch screws had sufficient screw pullout strength. Compared to C1 lateral mass screw inserted via posterior arch technique(Tan), there was no statistical significance, however, PAS was statistically stronger than C1 lateral mass screw inserted directly technique(uni-Harms). The pullout strength of Tan was nearly equal to summation of PAS and uni-Harms.We analyzed clinical results of atlanto-axial fixation using C1 lateral mass screws, especially focused comparing two different techniques between Tan and uni-Harms. Overall results was satisfactory ; high union rate, low complication rate, etc. However, C2 nerve irritation was highly seen following uni-Harms.We also reported the incidence of Ponticulus Posticus in Japanese using plain computed tomography and plain X-ray films.

为了实现安全有效的上颈椎固定手术，我们评估了我们发明的后弓螺钉(PAS)的拔出强度。后弓螺钉有足够的拔出强度。与经后弓技术(TAN)置入的C1侧块螺钉相比，差异无统计学意义，但PAS的强度明显强于经后弓入路的C1侧块螺钉(Uni-Harm)。Tan的拔出强度几乎等于PAS和Uni-Harms的总和。我们分析了使用C1侧块螺钉进行寰枢椎内固定的临床效果，重点比较了Tan和Uni-Harm两种不同的固定技术。总体结果令人满意，愈合率高，并发症发生率低等。然而，单一HAMS术后C2神经刺激发生率较高。我们还报告了日本人桥小脑桥的发生率。

项目成果

環軸椎固定術後に後頭環椎関節面が安定化する可能性がある

寰枢椎融合手术后枕-寰椎关节面稳定的可能性

• 发表时间: 2011
• 作者: 水谷潤;他
• 通讯作者: 他

Occiput erosion following C1 lateral mass screws

C1 侧块螺钉后枕骨侵蚀

• 发表时间: 2012
• 作者: Mizutani J;Fukuoka M. Suzuki N;Otsuka S;Inada A;Abumi K;Muro H;Otsuka T
• 通讯作者: Otsuka T

Over ten-year follow up of minimal short segment O-C fusion with rheumatoid cervical spine

类风湿颈椎最小短节段O-C融合术十余年随访

• 发表时间: 2010
• 作者: Jun Mizutani;et al.
• 通讯作者: et al.

C2 nerve irritation following C1 lateral mass screws. Compaing two different techniques

C1 侧块螺钉后 C2 神经刺激。

• 发表时间: 2011
• 作者: 水谷潤;福岡宗良;鈴木伸幸;大塚聖視;大塚隆信
• 通讯作者: 大塚隆信

C2 nerve irritation following C1 lateral mass screws. Comparing clinical results of two different techniques

C1 侧块螺钉后 C2 神经刺激。

• 发表时间: 2010
• 作者: Mizutani J;Fukuoka M;Suzuki N;Abumi K;Otsuka S;Otsuka T
• 通讯作者: Otsuka T