The instant invention is a novel method for stabilization of the posterior pelvis (iliosacral) when treating an unstable pelvic ring fracture. Cannulated screws are inserted through the posterior of the ilium through the sacroiliac joint and into the sacrum. The screws are used to affix the iliosacral joint while it heals. The screws are used in conjunction with a bone plate (through which the screws pass) to provide the construct/fixation with added strength and stability compared to iliosacral fixation using screws alone.
