patients will receive a diagnostic intervention with multiple x-rays. These x-rays will be taken as different levels of force are applied to the pelvis. This will be used to determine instability as an indication for surgical intervention to stabilize the pelvic ring.
The primary aim of this investigation is to prospectively and clinically validate a novel, reproducible method of quantitative application of compressive stress to a LC1 pelvic ring injury of indeterminate stability for the purpose of assessing quantitative pelvic ring displacement.