Zhou Dong, Xu Nan-Wei, Nong Lu-Ming, Zhang Yu
Department of Orthopedics, Changzhou No. 2 Affiliated Hospital of Nanjing Medical University, Changzhou 210003, China.
Zhonghua Yi Xue Za Zhi. 2010 Jun 15;90(23):1612-4.
To evaluate the feasibility and accuracy of thoracic pedicle screw fixation when assisted by a CT-based navigation system.
A total of 102 thoracic pedicle screws inserted by a CT-based navigation system (n = 24) (Group A) and 98 thoracic pedicle screws inserted by X-ray fluoroscopy (n = 22) (Group B) were observed by postoperative CT scan. The accuracy of both series was compared. And the process of navigation was investigated.
Among Group A, 99 were of grade I (97.1%), 3 grade II and 0 grade III; among Group B, 88 were of grade I (89.8%), 8 grade II and 2 grade III. One patient of grade III had the intractable pain of chest and back. Neural damage was not demonstrated. The difference was statistically significant (P < 0.05).
A CT-based navigation system can increase accuracy of thoracic pedicle screw fixation.
评估基于CT的导航系统辅助下胸椎椎弓根螺钉固定的可行性和准确性。
通过术后CT扫描观察基于CT的导航系统置入的102枚胸椎椎弓根螺钉（n = 24）（A组）和X线透视置入的98枚胸椎椎弓根螺钉（n = 22）（B组）。比较两组的准确性，并研究导航过程。
A组中，I级99枚（97.1%），II级3枚，III级0枚；B组中，I级88枚（89.8%），II级8枚，III级2枚。1例III级患者有顽固性胸背部疼痛。未发现神经损伤。差异有统计学意义（P < 0.05）。
基于CT的导航系统可提高胸椎椎弓根螺钉固定的准确性。
