Biomechanical Evaluation of Conventional Internal Contemporary Spinal Fixation Techniques Used for Stabilization of Complete Sacroiliac Joint Separation: A 3-Dimensional Unilaterally Isolated Experimental Stiffness Study

Abstract

The iliosacral fixation with 2 6.5 mm AO-cancellous screws for complete sacroiliac dislocation demonstrated the highest stiffness and the short spinal instrumentation the poorest stiffness. All other fixation techniques could be generally considered of equivalent stability value.