Ausrissfestigkeit implantierter Pedikelschrauben in konventioneller und fluoroskopisch-navigierter Technik
Autor: | L. Perlick, J. Grifka, J. Matussek, W. Plitz, T. Renkawitz, O. Linhardt |
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Rok vydání: | 2006 |
Předmět: |
musculoskeletal diseases
Orthodontics Computer-assisted surgery medicine.diagnostic_test business.industry medicine.medical_treatment equipment and supplies musculoskeletal system surgical procedures operative Lumbar Cadaver medicine Fluoroscopy Surgery Lumbar spine Pedicle screw business Cadaveric spasm Conventional technique Biomedical engineering |
Zdroj: | Zentralblatt für Chirurgie. 131:407-410 |
ISSN: | 1438-9592 0044-409X |
DOI: | 10.1055/s-2006-950383 |
Popis: | Aim 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. Methods 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. Results 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). Conclusion Fluoroscopic navigated implantation of pedicle screws increases the pullout strength in thoracic and lumbar cadaveric spines as compared with conventional methods. |
Databáze: | OpenAIRE |
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