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European Spine Journal

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01-01-2013 | Original Article

Accuracy of lower cervical pedicle screw placement with assistance of distinct navigation systems: a human cadaveric study

Authors: Wei Tian, Yajun Liu, Shan Zheng, Yanwei Lv

Published in: European Spine Journal | Issue 1/2013

Abstract

Purpose

Evaluate the accuracy of five different techniques for lower cervical pedicle screw placement.

Methods

Forty human cadaveric cervical spines were equally divided into five groups, and each group had eight specimens. Pedicle screws with dia. 3.5 mm were used. Group 1 was blind screw placement without any assistance; Group 2–5 was assisted by the X-ray fluoroscopy, virtual fluoroscopy navigation system, CT-based navigation system, and Iso-C 3D navigation system, respectively. Thereafter, cortical integrity of each pedicle was evaluated by anatomic dissection of the specimens.

Results

A total of 398 pedicle screws were inserted. In the Group 1–5, the average operation time per sample was 27 ± 3.0, 112 ± 10.3, 69 ± 6.4, 98 ± 11.0, and 91 ± 6.0 min, respectively. The outcome for excellent, fair and poor were 29 (36.3 %), 21 (26.2 %) and 30 (37.5 %) in Group 1; 35 (44.9 %), 29 (37.2 %) and 14 (17.9 %) in Group 2; 34 (42.5 %), 36 (45.0 %) and 10 (12.5 %) in Group 3; 70 (87.5 %), 10 (12.5 %) and 0 (0.0 %) in Group 4; 72 (90.0 %), 8 (10.0 %) and 0 (0.0 %) in Group 5.

Conclusions

Blind screw placement was surely unsafe. Lower cervical pedicle screw placement assisted by the CT-based navigation system or the Iso-C 3D navigation system significantly improved the accuracy compared to the fluoroscopy assistance and the virtual fluoroscopy navigation assistance.

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Title: Accuracy of lower cervical pedicle screw placement with assistance of distinct navigation systems: a human cadaveric study
Authors: Wei Tian
Yajun Liu
Shan Zheng
Yanwei Lv
Publication date: 01-01-2013
Publisher: Springer-Verlag
Published in: European Spine Journal / Issue 1/2013
Print ISSN: 0940-6719
Electronic ISSN: 1432-0932
DOI: https://doi.org/10.1007/s00586-012-2494-6

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Accuracy of lower cervical pedicle screw placement with assistance of distinct navigation systems: a human cadaveric study

Abstract

Purpose

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

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