Publication:
How to reduce stress on the pedicle screws in thoracic spine? Importance of screw trajectory: a finite element analysis

Thumbnail Image

Departments

School / College / Institute

Organizational Unit

Program

KU Authors

Co-Authors

Güvenç, Yahya
Erbulut, Deniz

Publication Date

Language

Embargo Status

NO

Journal Title

Journal ISSN

Volume Title

Alternative Title

Abstract

Aim: to investigate the biomechanical comparison of thoracic transpedicular screw trajectories on the sagittal plane. Material and methods: a three-dimensional, non-linear finite element analysis (FEA) model of T8 through T9 was used. Anatomic trajectory (AT) and Straightforward trajectory (ST) models of the transpedicular screws were used in the intact FEA model. The von-Mises stress and range of motion (ROM) of the transpedicular screws were evaluated. Results: the difference in ROM between both techniques was negligible. In lateral bending and axial rotation, FEA showed decrease in stress by 25% and 8%, respectively, when pedicle screws were placed using AT. Conclusion: AT decreased the von-Mises stress of the pedicle screws, thereby reducing the rates of screw breakage and fatigue risks. In addition, we believe that AT could protect against screw loosening because the von-Mises stress of the internal fixation was scattered.

Source

Publisher

Turkish Neurosurgical Society

Subject

Clinical neurology, Surgery

Citation

Has Part

Source

Turkish Neurosurgery

Book Series Title

Edition

DOI

10.5137/1019-5149.JTN.21895-17.2

item.page.datauri

Link

Rights

Copyrights Note

Endorsement

Review

Supplemented By

Referenced By

0

Views

7

Downloads

View PlumX Details