Zhao Jianwu, Yang Lili, Zheng Shuang, Qu Yang, Zhang Xiwen, Kang Mingyang, Dong Rongpeng, Zhao Xin, Yu Tong
Department of Orthopedics.
Department of Gynaecology, The Second Hospital of Jilin University, Changchun, Jilin Province, China.
Medicine (Baltimore). 2019 May;98(19):e15291. doi: 10.1097/MD.0000000000015291.
The purpose of this study is to introduce the technique of screw view model of navigation (SVMN) for upper cervical pedicle screw (UCPS) insertion. With the assistance of SVMN technology, the difficulty of screw placement manipulation can be diminished and the accuracy of placement can be improved.
A 49-year-old man presented with numbness of extremities and limited activity for 2 years.
He was diagnosed with old fracture of C1 vertebra and atlantoaxial subluxation.
We used SVMN to assist UCPS insertion and lateral mass screw insertion in this patient.
A total of 2 pedicle screws and 2 lateral mass screws were inserted, all screws were defined as excellent position according to postoperative computer tomography (CT). The neurological function was intact postoperatively. The operation time was 293 minutes, the total fluoroscopic time was 4.1 minutes and the bleeding volume was 302 ml. There were no complications during the 48 months follow-up period.
The application of SVMN in UCPS insertion could achieve satisfactory effect of internal fixation for upper cervical spine and avoid neurovascular damage. The utilization of SVMN for UCPS insertion is a safe and efficacious method. Besides, it also increased the patients' hospital cost, and the surgeon must be quite familiar with the functional state of computer navigation.
本研究的目的是介绍用于上颈椎椎弓根螺钉（UCPS）置入的导航螺钉视图模型（SVMN）技术。借助SVMN技术，可减少螺钉置入操作的难度并提高置入的准确性。
一名49岁男性，出现四肢麻木及活动受限2年。
诊断为C1椎体陈旧性骨折并寰枢椎半脱位。
我们在该患者中使用SVMN辅助UCPS置入及侧块螺钉置入。
共置入2枚椎弓根螺钉和2枚侧块螺钉，根据术后计算机断层扫描（CT），所有螺钉位置均判定为优良。术后神经功能完好。手术时间为293分钟，总透视时间为4.1分钟，出血量为302毫升。在48个月的随访期内无并发症发生。
SVMN在UCPS置入中的应用对上颈椎可取得满意的内固定效果并避免神经血管损伤。SVMN用于UCPS置入是一种安全有效的方法。此外，它也增加了患者的住院费用，并且外科医生必须非常熟悉计算机导航的功能状态。
