In Structural Collapse US&R, rescuers should assume the presence of which injuries even if the victim doesn't report symptoms, based on mechanism of injury?

• A. Head injuries
• B. Neck or back injuries
• C. Chest injuries
• D. Leg fractures

Answer: (B)

Assume spinal injuries based on how the collapse happened, because the mechanism of injury in a structural collapse often produces hidden damage to the neck and back even if the victim says nothing is hurt. Debris loads, trapping, sudden shifts, or crush forces can strain or fracture cervical or thoracic–lumbar regions, and symptoms may be delayed, masked by shock, or not easily communicated in the chaotic rescue environment. Because a missed spinal injury can lead to paralysis or life‑threatening consequences, responders immobilize the spine early and handle the patient in a way that maintains alignment until a medical professional can assess stability.

Head injuries can occur, but they’re not as consistently occult or as high‑risk for ongoing spinal compromise in this scenario. Chest injuries and leg fractures are important in their own right, but the overarching safety concern given the typical MOI is protecting the neck and back to prevent spinal cord injury, hence why this option is closest to the correct concept.