A biomechanical evaluation of the sacroiliac anatomy type bar-plate internal fixation system / 中国骨伤

ABSTRACT

<p><b>OBJECTIVE</b>To evaluate the biomechanical personality of the sacroiliac anatomy type Bar-plate system (SABP), which was of fixation usage to the fracture or dislocation of the sacroliliac joint.</p><p><b>METHODS</b>Twenty fresh and freeze cadaver pelvises were prepared with pelvic fracture model,compared with different internal fixation systems such as Galveston technique, transiliac rod fixation, reconstruction plate and sacroiliac joint screws using experimental stress analysis methods,and then the stability of the pelvic was obtained and evaluated.</p><p><b>RESULTS</b>Using new SABP system to treat pelvic sacroiliac joint fracture and dislocation was higher 10%, 11%, 16%, 21% in the strength; more 12%, 14%, 21%, 31% in rigidity; less 13%, 14%, 22%, 25% in straining;less 10%, 12%, 16%, 20% in shifting than the Galveston technique, transiliac rod fixation, reconstruction plate and sacroiliac joint screws, with remarkable statistic difference (P < 0.05), and it was even better than cadaver pelvis.</p><p><b>CONCLUSION</b>To treat pelvic facture, the fixation with new SABP system is of better strength, rigidity and stability, and the SABP system is an ideal new application.</p>