Abstract
Early reduction and rigid fixation of unstable vertical shear pelvic fractures has been shown to decrease the incidence of late sequelae and facilitate early mobilization. The results of fixation of the posterior pelvic ring without anterior fixation are unknown. The purpose of this study was to perform a biomechanical comparison of the most frequently used techniques of posterior fixation for unstable pelvic sacroiliac dislocations in conjunction with ipsilateral rami fractures, i.e., an unstable vertical shear injury. The four methods of posterior fixation tested included sacroiliac (SI) screws, anterior SI plates, transiliac bars, and a combination of SI screws and transiliac bars. Six cadaveric pelvises were tested in axial compression and torsion on a biaxial servohydraulic testing machine. Compared to the intact pelvis, single posterior methods of fixation provided approximately 70-85% resistance to axial and torsional loading. By combining SI screws with transiliac bars, approximately 90% of intact pelvic stability was achieved. Our results suggest that rigid posterior fixation of sacroiliac dislocations alone may obviate the need for additional complex anterior surgical procedures to fix rami fractures.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.