The effects of pre-stressed rods contoured by different bending techniques on posterior instrumentation of L4-L5 lumbar spine segment: A finite element study

Basit Öğe Kaydı
dc.authoridDemir, Teyfik/0000-0001-6352-8302
dc.contributor.authorSengul, Emre
dc.contributor.authorOzmen, Ramazan
dc.contributor.authorDemir, Teyfik
dc.date.accessioned2024-09-29T16:05:02Z
dc.date.available2024-09-29T16:05:02Z
dc.date.issued2022
dc.departmentKarabük Üniversitesien_US
dc.description.abstractPosterior pedicle screw instrumentation (PPSI) is a well-known method in lumbar spine surgery. Understanding how PPSI affects the biomechanics of the lumbar spine is an important issue. In particular, during PPSI operations, surgeons bend rods according to the patients' spinal curvatures based on their own experiences. As a result, residual stresses develop on the rods due to this bending. Although many finite element-based biomechanical studies have been performed for PPSI, studies comparing the effects of residual stresses arising from rod contouring on the construct stresses are lacking. Thus, this study aimed to investigate the effects of residual stress in PPSI using rods contoured with a French bender and an in-situ bender, as well as comparing the differences in stress increment with straight and contoured rods for different physiological motions. Accordingly, a finite element (FE) model of the L4-L5 lumbar spine segment was developed for PPSI and the effects of residual stresses on rods were investigated by using different bending methods. In the simulations, it was found that rods contoured with a French bender with residual stress resulted in significantly more increased stress in PPSI compared to those contoured with an in-situ bender. The results of this study emphasize that increased stress in PPSI due to the residual stresses for different physiological motions may increase the risk of PPSI failures. Additionally, the finite element modeling approach employed here could be used as a fundamental tool for further investigations of topics such as PPSI fatigue life and failure studies.en_US
dc.identifier.doi10.1177/09544119221096582
dc.identifier.endpage972en_US
dc.identifier.issn0954-4119
dc.identifier.issn2041-3033
dc.identifier.issue7en_US
dc.identifier.pmid35522468en_US
dc.identifier.scopus2-s2.0-85130107514en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage960en_US
dc.identifier.urihttps://doi.org/10.1177/09544119221096582
dc.identifier.urihttps://hdl.handle.net/20.500.14619/6471
dc.identifier.volume236en_US
dc.identifier.wosWOS:000796259200001en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherSage Publications Ltden_US
dc.relation.ispartofProceedings of the Institution of Mechanical Engineers Part H-Journal of Engineering in Medicineen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectResidual stressen_US
dc.subjectlumbar spineen_US
dc.subjectposterior pedicle screwen_US
dc.subjectfinite element methoden_US
dc.subjectbiomechanicsen_US
dc.titleThe effects of pre-stressed rods contoured by different bending techniques on posterior instrumentation of L4-L5 lumbar spine segment: A finite element studyen_US
dc.typeArticleen_US

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
PubMed İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu