Concussion in contact sport： A challenging area to tackle

1.TheproblemTheterm'concussion'referstoacommonformoftraumaticbraininjury,whichtypicallyoccursafterabloworinjurytothehead.Ithasbeendescribedasa'complexpathophysiologicalprocessaffectingthebrain,inducedbybiomechanicalfactors',andshearforcesinducedbyrotationalaccelerationarebelievedtobetheprimarymechanismofinjuryinconcussion.~1TheincidenceofconcussionintheUKhasbeenshowntobeup