Which mechanism of injury is most likely to cause a pelvic fracture?

A dismounted improvised explosive device (IED) attack is indeed one of the mechanisms most likely to result in a pelvic fracture. This type of explosion generates a significant and localized force that can cause severe blunt trauma to the pelvis. Given the nature of such attacks, individuals may experience a rapid deceleration and direct impact that can compromise the stability of the pelvic ring or lead to fractures in the pelvic area.

Pelvic fractures often occur in scenarios involving high-energy impacts, where the forces involved exceed the structural limits of the pelvic bones. In a dismounted IED attack, the blast wave and potential secondary projectiles can inflict trauma on soldiers or personnel moving on foot, leading to a higher incidence of pelvic injuries.

While high falls, sports injuries, and motor vehicle collisions can also lead to pelvic fractures, the kinetic energy and specific forces at play during a dismounted IED attack present a greater risk of severe pelvic trauma when compared to the other options listed.