Lumbar interbody fusion: a parametric investigation of a novel cage design with and without posterior instrumentation

摘要

IntroductionA finite element model of the L4-L5 human segment was employed to carry out a parametric biomechanical investigation of lumbar interbody fusion with a novel “sandwich” cage having an inner stiff core and two softer layers in the areas close to the endplates, with and without posterior fixation.