Introduction
Pelvic fractures are uncommon but complex injuries associated with a high degree of morbidity and mortality. Most fractures involving the pelvis, specifically the sacrum, can be effectively stabilized with iliosacral screws alone. However, significantly unstable fractures, particularly vertical shear patterns, as well as U-type variant sacral fracture patterns that create spinopelvic instability, require the addition of lumbopelvic fixation. The surgical technique involves neurologic decompression as necessary, multiplanar reduction of the pelvic ring and sacrum, and placement of stable fixation. Treatment of these severe injuries requiring lumbopelvic fixation is challenging and requires active collaboration between spine trauma and pelvis trauma surgeons. Although not routinely used, lumbopelvic fixation is an essential technique for the stabilization of complex pelvis fractures.