title: [Pedicle screw fixation of thoracic spinal fracture assisted by CT-based navigation system].
abstract: 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.
authors.affiliation: Department of Orthopedics, Changzhou No. 2 Affiliated Hospital of Nanjing Medical University, Changzhou 210003, China. zhoudong1012@hotmail.com
authors.forename: Dong
authors.initials: D
authors.lastname: Zhou
authors.forename: Nan-Wei
authors.initials: NW
authors.lastname: Xu
authors.forename: Lu-Ming
authors.initials: LM
authors.lastname: Nong
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhang
mesh_terms: 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