What are the steps for assessing pelvis instability?

The correct approach for assessing pelvis instability involves palpating specific areas to evaluate the integrity of the pelvic structure. By palpating posteriorly on the iliac crest, you can assess the patient’s pelvis for any signs of instability or fractures. Continuing to apply pressure inward and back on the symphysis pubis provides further assessment of the midline stability of the pelvis. These actions allow the medic to identify any abnormal movement or tenderness that may indicate significant injury to the pelvic region.

The other methods suggested do not provide a thorough evaluation of pelvic stability. For example, pressing hard on the abdomen does not specifically target the pelvic structure and may overlook crucial indicators of instability. Applying pressure to the lower back area might not yield accurate information about the pelvic condition and can be uncomfortable for the patient without giving insight into the pelvis itself. Finally, instructing the casualty to move their legs introduces risk, particularly if there is a suspected pelvic injury, as movement could exacerbate any existing trauma. Thus, the palpation method is the most effective and focused way to assess for pelvic instability.