KINEMATICAL AND LOAD SHARING EFFECT OF A NOVEL POSTERIOR DYNAMIC STABIIZATION SYSTEM IMPLNATED IN LUMBAR SPINE

INTRODUCTION Posterior dynamic stabilization systems (PDS) has been proposed as an alternative solution for treatment of degenerative disc disease. PDS systems are designed to restore the kinematics of destabili zed segment to its intact state. The objective of this study was to investigate the biomechanical effect of a novel PDS system on lumbar spine. A cadaveric experiment followed by a Finite Element (FE) modeling approach were used for this purpose.