• André Luiz Loyelo Barcellos, Vinícius M da Rocha, and GuimarãesJoão Antonio MatheusJAMOrthopedic Trauma Surgeon and Researcher from National Institute of Traumatology and Orthopedics, Rio de Janeiro - RJ, Brazil. Electronic address: jmatheusguimaraes@gmail.com..
• Spine Surgeon and Chief of Spine Diseases Center from National Institute of Traumatology and Orthopedics, Rio de Janeiro - RJ, Brazil.
• Injury. 2017 Nov 1; 48 Suppl 6: S5-S11.

IntroductionSpondylopelvic dissociation is an uncommon and complex injury that results from high-energy trauma with axial overloading through the sacrum. Due to the life-threatening nature of these injuries, standard Advanced Trauma Life Support® (ATLS) protocol must be used in the trauma setting as part of the initial management of these patients. The key to diagnosis is a good physical exam coupled with high level of suspicion. Radicular neurological deficits commonly are present in spondylopelvic dissociation (L5's roots) and should be documented for future evaluations. Radiographic views and CT-scan is preferred for the diagnosis.Biomechanics And ClassificationThe authors briefly describe the anatomy and biomechanics of the pelvis, and present the main classifications used to define this rare lesion.TreatmentDiscussion about setting the boundaries of surgical stabilization, if there is still a role for conservative treatment, the importance of the initial treatment and the timing of intervention. Decompression is mandatory in the presence of canal compromise and progressive neurological deficit, regardless of biomechanical criteria for surgery. Kyphotic deformity occurs at the site of sacral transverse fracture and also reduces anteroposterior pelvis diameter. The technique of reduction and posterior surgical stabilization is emphasized. If residual kyphosis remains after bilateral lumbopelvic fixation by shifting of the lower sacral segment, we use S2 and/or S3 screws connected to transitional rods to additional reduction. An illustrated case is shown.ComplicationsThe infection of the wound and the failure of the implants are the most frequent complications of this surgical treatment.ConclusionPosterior stabilization is widely recognized as crucial in the treatment of pelvic disruptions. The concept of circumferential restoration of pelvic ring by bilateral lumbopelvic fixation and anterior fixation seems to be a nice option to increase stabilization and avoid bone misalignment.© 2017 Elsevier Ltd. All rights reserved.

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