Pullout resistance of conventional pedicle screw implantation in comparison to fluoroscopic computer-assisted technique
Aim of the study was to compare pullout resistance of pedicle screws after conventional and fluoroscopic computer-assisted implantation in the cadaveric thoracic and lumbar spine. Pedicle screws were inserted in a total of 10 vertebrae of different human specimens: 10 screws were placed using conven...
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Published in | Zentralblatt für Chirurgie Vol. 131; no. 5; p. 407 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | German |
Published |
Germany
01.10.2006
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Subjects | |
Online Access | Get more information |
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Summary: | Aim of the study was to compare pullout resistance of pedicle screws after conventional and fluoroscopic computer-assisted implantation in the cadaveric thoracic and lumbar spine.
Pedicle screws were inserted in a total of 10 vertebrae of different human specimens: 10 screws were placed using conventional technique (group 1) and 10 screws were inserted with fluoroscopic computer-assisted system contralaterally (group 2). Then pedicle screws were evaluated for biomechanical axial pullout resistance.
Mean pullout force was 232 N (range 60-600 N) in group 1 and 353 N (range 112-625 N) in group 2. The difference was significant (p=0,0425).
Fluoroscopic navigated implantation of pedicle screws increases the pullout strength in thoracic and lumbar cadaveric spines as compared with conventional methods. |
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ISSN: | 0044-409X |
DOI: | 10.1055/s-2006-950383 |