Turkish Neurosurgery
Comparison of the rigid rod system with modular plate with the finite element analysis in short-segment posterior stabilization in the lower lumbar region
can yaldız1, birol ozkal2, Yayha Güvenç 3, Salim Senturk 4, Deniz Erbulut 4, Iman Zafarparandah 4, Onur Yaman 5, Ihsan Solaroğlu 5, Fahir Özer 5
1Sakarya Training and Research Hospital, Department of Neurosurgery, sakarya,
2 Alanya State Hospital, Department of Neurosurgery,, antalya,
3Sincan State Hospital, , Department of Neurosurgery, ankara,
4Koc University, Department of Mechanical Engineering , istanbul,
5Koc University, Department of Neurosurgery,, istanbul,
DOI: 10.5137/1019-5149.JTN.16203-15.1

Aim:Many studies are available in the literature for posterior spinal instrumentation. The use of rod and plate is still controversial in the literature. In this study, we have planned to work with finite element analysis on the strength and superiority of modular rigid plate and rod systems, which are used in the lower lumbar region, against each other.Material and Methods:Ti6Al4V grade 5 Titanium biocompatible alloy anterior plate for lumbar spine fixation device. Finite element (FE) analysis on the human lumbar spine model.Results:In our study, intact spine, rigid system fixed with rod and modular plate systems were evaluated at flexion, Ext, LB and AR. They did not show statistically significant superiority over one another in terms of limitations on movement created during the ROM exercises and the rigidity. Conclusion:In light of all the results of FE analysis, the PRSS and NSS systems applied do not have a significant superiority over one another. Equivalent results in limitation of movement and the rigidity allow the use of these systems for short-segment posterior spinal instrumentation with the same indications.

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