The Effect of PEEK-Rod Fixation Systems on Finite Element Lumbar Spine Model

Orthopedic fixation devices have been employed in the treatment of spinal diseases. Special developed to decrease effect injuries and deformities used neurologic back pain patients. In this study, finite element spine model an adolescent idiopathic scoliotic patient was constructed. The titanium implant system polyetheretherketone (PEEK) were compared regarding their stress distributions. lumbar from L2 L5 vertebra obtained computed tomography scan data. three-dimensional consisted four vertebrae, three intervertebral discs, six facet joints, corresponding ligaments. Loading boundary conditions applied L2-L5 model. According subjected loads bending moments on model, distributions evaluated especially screw-rod systems both for PEEK-based systems. disc structures also analyzed effects adjacent segment disease, which has reported as a post-operative fusion surgeries. Ansys software simulation processes models without with different Comparative investigation between showed that distribution values decreased system. Moreover, lower total deformation equivalent recorded system, L3-L4 L4-L5 discs. Furthermore, allowed overall loading whole models. And it concluded considerably reduced load discs ligaments, appeared better option reduction sharing when