A Finite Element Based Comparative Study of Lumbosacral Pedicle Screw Fixation and Artificial Disc Replacement

Abstract The aim of this is to evaluate the biomechanical performance double-level semirigid pedicle screw fixation and artificial intervertebral disc replacement in lumbar spine. Ti6Al4V CFR-PEEK material are used for replacement. In present study, carried out between L3-L4-L5 regions under application moment 6,8,10 Nm range motion compared during flexion, extension, right-left lateral bending. Two-level fusion total developed lumber spine vertebrae. Carbon fiber reinforced (CFR-PEEK) ultra-high molecular weight polyethylene (UHMWPE) considered spinal core part respectively. Afterwards, applying finite element analysis, it detected that rod able increase at implanted level comparison both flexion–extension case hypermobility was observed. Hence, significant with a better alternative treatment degenerative diseases.