Comparing Accuracy of Cervical Pedicle Screw Placement between a Guidance System and Manual Manipulation: A Cadaver Study

Medical Science Monitor : International Medical Journal of Experimental and Clinical Research
Yu CongGuang-Ping Mao

Abstract

The aim of this study was to compare the accuracy of cervical pedicle screw placement between a three-dimensional guidance system and manual manipulation. Eighteen adult cadavers were randomized into group A (n=9) and group B (n=9). Ninety pedicle screws were placed into the C3-C7 under the guidance of a three-dimensional locator in group A, and 90 screws were inserted by manual manipulation in group B. The cervical spines were scanned using computed tomography (CT). Parallel and angular offsets of the screws were compared between the two placement methods. In group A, 90% of the screws were within the pedicles and 10% breached the pedicle cortex. In group B, 55.6% were within the pedicle and 44.4% breached the pedicle cortex. Locator guidance showed significantly lower parallel and angular offsets in axial CT images (P<0.01), and significantly lower angular offset in sagittal CT images (P<0.01) than manual manipulation. Locator guidance is superior to manual manipulation in accuracy of cervical screw placement. Locator guidance might provide better safety than manual manipulation in placing cervical screws.

References

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Citations

Dec 3, 2016·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Klaus J SchnakeClaudio Lamartina
Nov 16, 2016·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Daniel DixonDaniel Baluch
Jun 24, 2017·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·Farzam VazifehdanVasilios G Igoumenou
Oct 25, 2017·Veterinary Surgery : VS·Sinead E Hamilton-BennettSebastien Behr
Sep 2, 2016·Medical Science Monitor : International Medical Journal of Experimental and Clinical Research·Yongqiang XuGang Wang
Oct 17, 2020·Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T·Cristina ToniSebastien Behr

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