title: Acute brain trauma.
abstract: In the 20th century, the complications of head injuries were controlled but not eliminated. The wars of the 21st century turned attention to blast, the instant of impact and the primary injury of concussion. Computer calculations have established that in the first 5 milliseconds after the impact, four independent injuries on the brain are inflicted: 1) impact and its shockwave, 2) deceleration, 3) rotation and 4) skull deformity with vibration (or resonance). The recovery, pathology and symptoms after acute brain trauma have always been something of a puzzle. The variability of these four modes of injury, along with a variable reserve of neurones, explains some of this problem.
authors.affiliation: Accident Compensation Corporation , New Zealand.
authors.forename: G T
authors.initials: GT
authors.lastname: Martin
mesh_terms: D000208:Acute Disease; D001930:Brain Injuries / Q000175:diagnosis / Q000453:epidemiology / Q000503:physiopathology; D003071:Cognition / Q000502:physiology*; D003952:Diagnostic Imaging; D014943:Global Health; D006801:Humans; D015994:Incidence; D020127:Recovery of Function / Q000502:physiology*; D015599:Trauma Severity Indices
keywords: Brain reserve; Concussion; High energy shockwaves; Postconcussion syndrome; Recovery of function; Traumatic brain injury