Flail chest or segment occurs when three or more contiguous ribs are fractured in two or more places. Clinically, a segment of only one or two ribs can act as a flail segment, hence there is some controversy between the clinical and radiological definitions. Clinically, this is observed in a non-ventilated patient as paradoxical movement of the flail segment. It can often be clinically occult. http://radiopaedia.org/articles/flail-chest
Epilepsy Fact | I experience 2 types of seizures. With a grand mal, I lose consciousness and become rigid. With a partial seizure, I my hands and arms become rigid and the muscles in my chest and face twitch.