Which of the following is a high-risk MOI?

• A. Ground-level fall
• B. Car passing by without incident
• C. Ejection from a vehicle
• D. Minor abrasion

Answer: (C)

Mechanism of injury tells us how the force was delivered and helps predict potential injuries. High-energy events cause more extensive harm, so they raise concern for serious trauma. Being ejected from a vehicle during a crash is a classic high-energy scenario because it implies a severe deceleration and loss of restraints. Without a seat belt, the body is thrown out of the vehicle, increasing the risk of major head, spinal, chest, and internal injuries, and the trajectory is unpredictable, often leading to life-threatening conditions. This contrasts with a ground-level fall, which, unless the person is very old or frail, typically carries lower risk, and a minor abrasion is clearly minor. So the mechanism indicating greatest concern here is ejection from a vehicle.