Fig. 5From: Finite element analysis comparing a PEEK posterior fixation device versus pedicle screws for lumbar fusionMoment-rotation curve in lateral bending with the cortico-pedicular posterior fixation (CPPF) device, pedicle screw system (PSS), and intact spine at one or two operated segments. At a pure moment of 7.5 Nm, lateral bending between the CPPF device and PSS was within 0.6 degrees under all loading conditionsBack to article page