Abstract: To investigate the influence of injured lumbar spine on its adjacent components under whole body vibration, a nonlinear three-dimensional finite element model of lumbar spine segments L3-L5 was developed. Several injury conditions of spine components were assumed, such as facetomy, denucleation and removal of posterior elements, and the dynamic finite element analyses were carried out to those injury conditions. The results show that the lumbar spine exhibits not only the vertical vibration but also the flexion-extension motion during vibration. The facet joints can limit the amplitude of flexion-extension motion of lumbar spine so as to protect the posterior region of annulus from large strain and stress during vibration. The disc denucleation will lead to high stress and bulge of intervertebral discs. The facetomy may exacerbate the degeration of intervertebral disc in the process of whole body vibration.