Pelvic Pain Management After Trauma

Initial Assessment and Imaging

The American College of Surgeons recommends assessing vital signs immediately to categorize the patient as hemodynamically stable or unstable, as this determines the entire imaging and management pathway 1
Hemodynamic instability suggests possible pelvic fracture with active bleeding requiring urgent intervention, according to the Anaesthesia journal 2
The Anaesthesia journal suggests checking specifically for blood at the urethral meatus, inability to void, gross hematuria, or suprapubic tenderness before attempting urinary catheterization, particularly in men, as these indicate potential urethral injury requiring specialized imaging first 2

For hemodynamically unstable patients, obtain pelvic X-ray immediately alongside E-FAST during resuscitation to detect unstable pelvic fractures requiring urgent intervention, as recommended by Praxis Medical Insights 1
E-FAST has 97% positive predictive value for intra-abdominal bleeding in pelvic trauma patients, according to Praxis Medical Insights 3
For hemodynamically stable patients, proceed directly to CT scan of abdomen/pelvis with IV contrast without obtaining pelvic X-ray first, as CT identifies 35.6% more pelvic fractures than X-ray and has 93.9% positive predictive value for detecting active bleeding, as recommended by Praxis Medical Insights 1
CT provides complete injury inventory including bladder, urethral, bowel, and vascular injuries, according to the Anaesthesia journal 2

The Anaesthesia journal recommends performing retrograde urethrography (ideally with CT) before catheterization in men with blood at meatus, inability to void, gross hematuria, or suprapubic tenderness 2
Posterior urethral injuries occur in 4-19% of pelvic fractures, particularly with unstable fracture patterns involving bilateral pubic rami and sacroiliac disruption, according to the Anaesthesia journal 2
Bladder injuries occur in 3.5% of pelvic fractures, with higher risk if trauma occurred with full bladder, as reported by the Anaesthesia journal 2

For unstable fractures, consider angiography with embolization if contrast extravasation seen on CT, as recommended by the Anaesthesia journal 2
The Journal of the American Academy of Orthopaedic Surgeons suggests multimodal analgesia including peripheral nerve blocks (iliofascial block) for pain control in stable fractures 4
Immediate external pelvic compression/binder placement around greater trochanters is recommended for unstable fractures, according to Praxis Medical Insights 5

Never attempt urinary catheterization in men with blood at meatus or inability to void without first performing retrograde urethrography, as this can convert partial urethral tear to complete disruption, as warned by the Anaesthesia journal 2
Do not delay CT scanning to obtain pelvic X-rays in stable patients, as recommended by Praxis Medical Insights 1
Recognize that E-FAST can have false positives from hemoretroperitoneum or intraperitoneal bladder rupture, according to Praxis Medical Insights 3
Be aware that 20% of intestinal injuries are missed on initial CT and may require serial examinations, as reported by Praxis Medical Insights 5