Blunt-force injuries are produced when the body is struck with or strikes a blunt object [1–5]. Both mechanisms result in a transfer of kinetic energy that is high enough to produce an injury. Blunt objects have a relatively large area. Examples of blunt objects are almost infinite: fists, shoes, pipes, bricks, bats, hammers, the ground, or parts of vehicles such as cars, trains, or airplanes. A blunt surface produces injuries by torsion, compression, scraping, tearing, shearing, or crushing. Blunt-force injuries occur in many kinds of medico-legal situations and contexts: criminal assaults, physical child abuse, traffic accidents, and falls (criminal, accidental, or suicidal). The severity of the injuries resulting from trauma is a balance between the amount of force, the area over which it is applied, and the duration of the force [2, 6]. In general, the greater the force, the smaller the area, or the shorter the duration over which the force is applied, the greater the injury will be.