caa a22 4500 445831618 CHVBK 20180317145316.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00586-010-1683-4 doi (NATIONALLICENCE)springer-10.1007/s00586-010-1683-4 Computer tomography assessment of pedicle screw placement in lumbar and sacral spine: comparison between free-hand and O-arm based navigation techniques [Elektronische Daten] [J. Silbermann, F. Riese, Y. Allam, T. Reichert, H. Koeppert, M. Gutberlet] Transpedicular screw fixation has been accepted worldwide since Harrington et al. first placed pedicle screws through the isthmus. In vivo and in vitro studies indicated that pedicle screw insertion accuracy could be significantly improved with image-assisted systems compared with conventional approaches. The O-arm is a new generation intraoperative imaging system designed without compromise to address the needs of a modern OR like no other system currently available. The aim of our study was to check the accuracy of O-arm based and S7-navigated pedicle screw implants in comparison to free-hand technique described by Roy-Camille at the lumbar and sacral spine using CT scans. The material of this study was divided into two groups, free-hand group (group I) (30 patients; 152 screws) and O-arm group (37 patients; 187 screws). The patients were operated upon from January to September 2009. Screw implantation was performed during PLIF or TLIF mainly for spondylolisthesis, osteochondritis and post-laminectomy syndrome. The accuracy rate in our work was 94.1% in the free-hand group compared to 99% in the O-arm navigated group. Thus it was concluded that free-hand technique will only be safe and accurate when it is in the hands of an experienced surgeon and the accuracy of screw placement with O-arm can reach 100%. Springer-Verlag, 2011 Pedicle screws nationallicence Image-guided surgery nationallicence Spine navigation nationallicence O-arm nationallicence Silbermann J. Department of Spine Surgery, Park-Krankenhaus, Leipzig, Germany aut Riese F. Department of Radiology, University Heart Centre, Leipzig, Germany aut Allam Y. Department of Orthopedic Surgery and Traumatology, Alexandria University, Alexandria, Egypt aut Reichert T. Department of Spine Surgery, Park-Krankenhaus, Leipzig, Germany aut Koeppert H. Department of Spine Surgery, Park-Krankenhaus, Leipzig, Germany aut Gutberlet M. Department of Radiology, University Heart Centre, Leipzig, Germany aut European Spine Journal Springer-Verlag 20/6(2011-06-01), 875-881 0940-6719 20:6<875 2011 20 586 https://doi.org/10.1007/s00586-010-1683-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00586-010-1683-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Silbermann J. Department of Spine Surgery, Park-Krankenhaus, Leipzig, Germany aut NATIONALLICENCE 700 1- Riese F. Department of Radiology, University Heart Centre, Leipzig, Germany aut NATIONALLICENCE 700 1- Allam Y. Department of Orthopedic Surgery and Traumatology, Alexandria University, Alexandria, Egypt aut NATIONALLICENCE 700 1- Reichert T. Department of Spine Surgery, Park-Krankenhaus, Leipzig, Germany aut NATIONALLICENCE 700 1- Koeppert H. Department of Spine Surgery, Park-Krankenhaus, Leipzig, Germany aut NATIONALLICENCE 700 1- Gutberlet M. Department of Radiology, University Heart Centre, Leipzig, Germany aut NATIONALLICENCE 773 0- European Spine Journal Springer-Verlag 20/6(2011-06-01), 875-881 0940-6719 20:6<875 2011 20 586 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer