[Pedicle screw fixation of thoracic spinal fracture assisted by CT-based navigation system].
OBJECTIVE
To evaluate the feasibility and accuracy of thoracic pedicle screw fixation when assisted by a CT-based navigation system.


METHODS
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.


RESULTS
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).


CONCLUSIONS
A CT-based navigation system can increase accuracy of thoracic pedicle screw fixation.
Zhou
Dong
D
Department of Orthopedics, Changzhou No. 2 Affiliated Hospital of Nanjing Medical University, Changzhou 210003, China. zhoudong1012@hotmail.com
Xu
Nan-Wei
NW
Nong
Lu-Ming
LM
Zhang
Yu
Y
D000293:Adolescent; D000328:Adult; D000368:Aged; D001863:Bone Screws; D005260:Female; D005593:Fracture Fixation, Internal / Q000379:methods*; D006801:Humans; D021621:Imaging, Three-Dimensional; D016268:Internal Fixators; D008297:Male; D008875:Middle Aged; D016103:Spinal Fractures / Q000000981:diagnostic imaging / Q000601:surgery*; D025321:Surgery, Computer-Assisted; D013904:Thoracic Vertebrae / Q000293:injuries; D014057:Tomography, X-Ray Computed; D055815:Young Adult