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Computer tomography assessment of pedicle screw placement in lumbar and sacral spine: comparison between free-hand and O-arm based navigation techniques

European Spine Journal volume 20, pages 875–881 (2011)Cite this article

Abstract

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%.

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Conflict of interest

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Affiliations

  1. Department of Spine Surgery, Park-Krankenhaus, Leipzig, Germany

    J. Silbermann, T. Reichert & H. Koeppert

  2. Department of Radiology, University Heart Centre, Leipzig, Germany

    F. Riese & M. Gutberlet

  3. Department of Orthopedic Surgery and Traumatology, Alexandria University, Alexandria, Egypt

    Y. Allam

Authors
  1. J. Silbermann
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  2. F. Riese
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  3. Y. Allam
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  4. T. Reichert
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  5. H. Koeppert
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  6. M. Gutberlet
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Correspondence to Y. Allam.

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Silbermann, J., Riese, F., Allam, Y. et al. Computer tomography assessment of pedicle screw placement in lumbar and sacral spine: comparison between free-hand and O-arm based navigation techniques. Eur Spine J 20, 875–881 (2011). https://doi.org/10.1007/s00586-010-1683-4

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  • DOI: https://doi.org/10.1007/s00586-010-1683-4

Keywords

  • Pedicle screws
  • Image-guided surgery
  • Spine navigation
  • O-arm