my brother was recently involved in a car accident. he suffered multiple injuries(head, chest, pelvic). the pelvic injury being one of the worst. he suffered a type b1-"open book" or a type c pelvic injury. both sacroilliac joints  as well as the symphsis were separated. (i believe the medical terminology is sacroillliac diastasis sand symphyseal). he has had an operation plating and pinning all bones back together . what has happened since then is that one or both titanium plates on the symphsis has sheared or broke completely. the separation between the symphsis is now 2 inches(was 6 inches) the doctors have now told him that a second operation is not probable,citing that it is risky to do a second one. what would be the increased risks with doing a second one compared to the first one? what has changed?
Welcome to Chat Doctor; thank you for your query, pelvic bone consists of 3 bones ilium, schism, and pubic bone.  Fracture involving the pubic bones are treated surgically by internal fixation, external fixation or traction. All these bones are not similar. Long bones like the one in the legs and thighs once fixed if problem occurs we can redo it. Surgical treatment to fix pelvic fracture itself is a tough one. Trying to re-fix has a risk of breaking the pelvis. And that is the reason for non-surgical management now. Now the best option for him is stabilization and after fracture has healed rehabilitation with physiotherapist. Giving painkillers to reduce the pain hope this explains Chat Doctor. 