| 篇名 |
The Importance of Meticulous Registration during Spinal Navigation for Pedicle Screw Placement |
| 作者 |
Feng-Wen Su, Tao-Chen Lee, Chun-Chung Lui, Yu-Ling Ting, Hung-Chen Wang, Yu-Jun Lin, Thung-Ming Su |
| 卷期/出版年月 |
41卷1期 (2008/2) |
| 頁次 |
1-6 |
| 摘要 |
Objectives: To evaluate correlations between registration errors and accuracy of pedicle screw placement.
Methods: Registration errors were analyzed as a relative index of accuracy in the computer imaging of surgical anatomy during spinal navigation. One hundred
eighty-four computer-assisted pedicle screw installations were performed in thirtysix patients. Registration errors during spinal navigation were recorded and grouped into A (registration error <1.5mm) and B (registration error more than 1.5mm). The screw placements were evaluated by postoperative CT and were
categorized as good (in the central core of the pedicle), fair (eccentricity of the screw and erosion of the pedicular cortex with perforation of less than 2mm), and poor (more than 2mm perforation).
Results: Ninety-four and ninety screw placements were examined in groups A
(registration error <1.5mm) and B (registration error more than 1.5mm),
respectively. In group A, seventy-five (79.8%) pedicle screw placements were
categorized as good, seventeen (18.1%) were fair, and two (2.1%) were poor. In
group B, fifty-seven (63.3%) were good, twenty-six (28. 9%) were fair, and seven (7.8%) were poor. The difference in screw placement results between group A and B reached statistical signficance (P=0.002, independent samples t-test).
Conclusion: Significantly more accurate pedicle screw placement can be achieved
by limiting registration errors. |
| 關鍵詞 |
spinal navigation, pedicle screw placement, registration error |
| 分類 |
Original Article |
