Accuracy of CT-based navigation of pedicle screws implantation in the cervical spine compared with X-ray fluoroscopy technique / 中华外科杂志
Chinese Journal of Surgery
;
(12): 1328-1330, 2005.
Article
in Chinese
| WPRIM
| ID: wpr-306113
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the feasibility and accuracy of cervical spine pedicle screw fixation assisted by X-ray fluoroscopy and CT-based navigation system.</p><p><b>METHODS</b>145 cervical pedicle screws were placed assisted by X-ray fluoroscopy and 159 cervical pedicle screws were placed assisted by CT-based navigation system. Screw positions were evaluated by postoperative CT scans or C-arm X-ray 3 dimensional reconstruction.</p><p><b>RESULTS</b>In the computer- assisted group, 155 (97.5%) screws were found completely within their pedicles compared with 133 (91.7%) correctly placed screws in the X-ray assisted group (P < 0.05). The process of navigation investigated in twenty patients showed that the mean time for registration and surface matching was 3.5 (range from 2 to 8 minutes) minutes and the mean time for screw-marker insertion was 2 (range from 1 to 3.5 minutes) minutes with the mean position deviation 0.31 mm (0.12-0.56 mm) per screw. Only twice C-arm fluoroscopy were performed to verify the accuracy of one screw position intraoperatively. No severe complications like neurovascular lesion occurred in both groups.</p><p><b>CONCLUSION</b>CT-based navigation system can increase the accuracy of cervical pedicle screw implantation significantly.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Spinal Fusion
/
General Surgery
/
Bone Screws
/
Diagnostic Imaging
/
Fluoroscopy
/
Tomography, X-Ray Computed
/
Cervical Vertebrae
/
Retrospective Studies
/
Imaging, Three-Dimensional
/
Surgery, Computer-Assisted
Type of study:
Diagnostic study
/
Observational study
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
Chinese
Journal:
Chinese Journal of Surgery
Year:
2005
Type:
Article
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