COMPRESSION ACROSS THE SACROILIAC JOINT USING A SUPRAACETABULAR ANTERIOR PELVIC FIXATOR:A NEW MODULAR COMPRESSION DEVICE FOR IMPROVED APPLICATION

ObjectivesThe additive use of an external modular device may improve dorsal compression forces in pelvic external fixation. This would improve the efficiency of indirect reduction and stabilization with an anterior pelvic external fixator. The purpose of this study was to determine the forces of the posterior pelvis achieved by a new device improving the application of a supraacetabular anterior external fixator compared with other constructs.Material and MethodSynthetic pelvic models were used. Complete pelvic ring instability was created by symphyseal and unilateral sacroiliac joint disruption. Four different constructs of fixation were tested. A pressure-sensitive film was placed in the sacroiliac joint. The constructs were applied in a standardized way. The maximum sacroiliacal compression loads (N) of each trial was recorded. Statistics was performed with the student t-test.ResultsStandard supraacetabular two-pin external fixator achieved a dorsal compression load of 13.84 (SD 8.13). The new dorsal p...