This document summarizes a research study that used finite element analysis to model and analyze the lumbar spine (L1-L5 vertebrae) under different loading conditions. Key points: - A 3D model of the lumbar spine was created in CATIA and meshed in ANSYS for finite element analysis. - Static loads of 10kg, 20kg, and 30kg were applied to simulate forward and backward bending. - Von Mises stress and total deformation were analyzed at each load to determine stress distributions and identify regions experiencing the least stress and deformation. - Results found the L5 vertebra experienced the least stress and deformation, providing insights to guide implant material selection and sizing to correct