Treatment
dislocation, pain
SECONDARY
In the ST group, percutaneous minimally invasive navigated S1 sacroiliac screw osteosynthesis (Showing an X-ray postoperatively after percutaneous S1 Screw fixation and application of anterior supraacetabular external fixator.In the CCT group radiological follow-up imaging was performed after 3–5 days to exclude significant secondary dislocation. If mobilization was impossible or if severe pain (VAS > 5) still occurred during mobilization after 3 days, CCT participants changed study arms and were scheduled for surgery. These specific patients were assigned to the ST group in the statistical evaluation.