椎动脉高跨和颈2椎板螺钉.ppt
![资源得分’ title=](/images/score_1.gif)
![资源得分’ title=](/images/score_1.gif)
![资源得分’ title=](/images/score_1.gif)
![资源得分’ title=](/images/score_1.gif)
![资源得分’ title=](/images/score_05.gif)
《椎动脉高跨和颈2椎板螺钉.ppt》由会员分享,可在线阅读,更多相关《椎动脉高跨和颈2椎板螺钉.ppt(28页珍藏版)》请在淘文阁 - 分享文档赚钱的网站上搜索。
1、椎动脉高跨和颈椎动脉高跨和颈2椎板螺钉椎板螺钉(High-Riding Vertebral Artery/C2 laminar screws)俞武良 2018-3-21C2 pedicle screwvertebral artery(VA)VA injury 4.1%to 8.2%for posterior atlantoaxial transarticular screw fixation 5.3%21%for C2 pedicular screw Factors contribute to VA injury VA groove(VAG)anomalyhigh-riding vertebr
2、al artery 14.5%18%narrow C2 pedicle 9.5%32%insertion of the screw extremely close to the VA HRVA defined as having an isthmus height of 5 mm and/or an internal height of 2 mm on the sagittal image 23 mm lateral to the cortical border of the spinal canal at C2.narrow C2 pedicle defined as having the largest pedicular width of 4 mm on the axial imagehigh-riding vertebral artery(HRVA)椎动脉在枢椎上关节突的下方有一个向外的弯曲,如果椎动脉弯曲过于向后、内或位置过高,则提示枢椎峡部狭窄,这种情况称为椎动脉高跨C2 laminar screw(Wright 2004)我们最近的病例我们最近的病例
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 椎动脉 螺钉
![提示](https://www.taowenge.com/images/bang_tan.gif)
限制150内