Numerical Evaluation of Spinal Stability after Posterior Spinal Fusion with Various Fixation Segments and Screw Types in Patients with Osteoporotic Thoracolumbar Burst Fracture Using Finite Element Analysis

The aim of this study was to analyze the spinal stability and safety after posterior fusion with various fixation segments screw types in patients an osteoporotic thoracolumbar burst fracture based on finite element analysis (FEA). To realize vertebral conditions T12, seven cases Young’s modulus, namely 0%, 1%, 5%, 10%, 25%, 50%, 100% for bones under intact were considered. Four T12 (fixed T11-L1, T10-T11-L1, T11-L1-L2, T10-T11-L1-L2) applied model. following considered: pedicle (PS) cortical (CS). Using FEA, four motions performed fixed spine, stress screw, peri-implant bone (PIB), intervertebral disc (IVD) range motion (ROM) calculated. lowest ROM calculated corresponded T10-T11-L1-L2 model, while closest situation achieved T11-L1-L2 model using PS. PB detected