Introduction: although the term “polytrauma” has been in use for decades, no generally accepted definition exists. Our definition has been until 2010: a combination of injuries where one, or the combination where one, or the combination of injuries himself is directly life threatening, in detail is meant: injury to two body cavities, or injury to one cavity committed by two long bone fractures, where spine and unstable pelvis has counted similarly as an injury to a cavity organ. Since 2013 a new definition has been established, the so-called Berlin definition. "A polytrauma means significant injuries of three or more points (AIS) in two or more different anatomic AIS regions in conjunction with one or more additional variables from 5 physiologic parameters: Hypotension (SBP - Systolic Blood Pressure