Bredow, J., Beyer, F., Oppermann, J., Kraus, B., Meyer, C., Stein, G., Eysel, P. and Koy, T. (2016). A novel classification of screw placement accuracy in the cervical spine. Technol. Health Care, 24 (6). S. 919 - 926. AMSTERDAM: IOS PRESS. ISSN 1878-7401
Full text not available from this repository.Abstract
BACKGROUND: Goal of this study is to present an easily reproducible and reliable measurement to evaluate accuracy of screw placement in cervical spine. METHODS: Accuracy of cervical screw position was assessed in 52 patients treated with 163 screws. Each patient receiving pedicle, transarticular C1/2, lateral mass, or laminar screws and postoperative CT scan was included. Placement position was categorized in 5 grades: Grade 1 is ideal with pedicle wall perforation < 1 mm, grade 2 < 2 mm, grade 3 < 3 mm, and grade 4 < 4 mm. Grade 5 > 4 mm and/or obstruction of transverse foramen by more than half a screw diameter. Intraclass correlation coefficient (ICC) values were assessed for inter-and intraobserver reliability. RESULTS: The mode of individual evaluations was calculated to assign a single value to each screw. This yielded 89 grade 1 (54.6%), 48 grade 2 (29.4%), 14 grade 3 (8.6%), 3 grade 4 (1.8%), and 9 grade 5 (5.5%) screws. Intraobserver reliability ICC was 0.966 and 0.959 for measurements. Interobserver reliability ICC was 0.938. CONCLUSION: This study introduces a reliable classification of cervical spine instrumentation with various screw types. This should enable the use of a uniform and reproducible, and thus comparable classification for screw position in cervical spine.
Item Type: | Journal Article | ||||||||||||||||||||||||||||||||||||
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URN: | urn:nbn:de:hbz:38-288573 | ||||||||||||||||||||||||||||||||||||
DOI: | 10.3233/THC-161246 | ||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | Technol. Health Care | ||||||||||||||||||||||||||||||||||||
Volume: | 24 | ||||||||||||||||||||||||||||||||||||
Number: | 6 | ||||||||||||||||||||||||||||||||||||
Page Range: | S. 919 - 926 | ||||||||||||||||||||||||||||||||||||
Date: | 2016 | ||||||||||||||||||||||||||||||||||||
Publisher: | IOS PRESS | ||||||||||||||||||||||||||||||||||||
Place of Publication: | AMSTERDAM | ||||||||||||||||||||||||||||||||||||
ISSN: | 1878-7401 | ||||||||||||||||||||||||||||||||||||
Language: | English | ||||||||||||||||||||||||||||||||||||
Faculty: | Unspecified | ||||||||||||||||||||||||||||||||||||
Divisions: | Unspecified | ||||||||||||||||||||||||||||||||||||
Subjects: | no entry | ||||||||||||||||||||||||||||||||||||
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Refereed: | Yes | ||||||||||||||||||||||||||||||||||||
URI: | http://kups.ub.uni-koeln.de/id/eprint/28857 |
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