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Athletic Injuries Notes Midterm 2.docx

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Department
Kinesiology
Course
Kinesiology 2236A/B
Professor
Bruce Morrison
Semester
Winter

Description
Lecture7Concussions03122012ConcussionDefinitionAcomplexpathophysiologicalprocessaffectingthebraininducedbytraumaticbiomechanicalforcesCanbelinearorrotationalLinearInjuryatimpactsiteBrainstrikesskullonoppositesideRotationalBrainstrikesskullonothersideBrainrotatesstretchesortearsstructuresvesselsasitshearsonitselfSymptomsaredependentonthepersonsoitishardtodefinespecificsymptomsCombinationofEmotionalitysadnessSomaticdizzinessSleepDisturbancelessthanusualandcognitivesymptomsattentionandmemoryCommonSymptomsHighschooluniversityathleteswin3daysofinjuryHeadache71Feelingsloweddown58Difficultyconcentrating57Dizziness55Fogginess53Fatigue50Visualblurringordoublevision49Lightsensitivity47Memorydysfunction43Balanceproblems43JustbecausesomesymptomsarenotvisibledoesntmeanthepersonisnotconcussedTherearenodefinedsymptomsforconcussionsBUSTEDMYTHSIDidntSeeHimHitHisHead60fromheadimpacts40arefromgettinghitintheheadConcussionsmaybecausedeitherbyAdirectblowtotheheadfaceneckorElsewhereonthebodywithanimpulsiveforcetransmittedtotheheadExgettinghitbodystopsheadkeepsgoingHeDidntEvenGetHitHardImpactsof100190g20mpgwdecelerationof14mphNoagreedonbiomechanicalthresholdforinjury60168gExfemaleshaveweakernecksForcedoesnotfactorinonsymptomseverityNotworriedabouthowhardtheywerehitdonotbaserecoverytimeonthisbecausesymptomsdonotpresentthemselvesbasedonforceItsthefactorsinvolvedinhitsuchaspositionthatareimpConcussionImpactNothowhardyouregettinghitCumulativeeffectsOrientationwhilegettinghitpositionTimingofthehitNeedsBetterEquipmentHelmetsonlypartiallyabsorbimpactHelmetsmainlypreventskullfractureTheinherentmaterialdesignofhelmetsareidealforpreventinghighenergyimpactforcesassociatedwithcatastrophicheadinjuriesbutlessidealforreducingthelowerimpactrotationalforcestowhichconcussionaretypicallyrelatedakahelmetscantprotectusfromverymuchMYTHthatitwillprotectfromheadinjuryGetanewmouthguardWontpreventconcussionsThereisNOstrongscientificevidenceofanassociationbetweenmouthguarduseandreducedconcussionriskConcussionsAreGettingWorseHowbadisit35concussionsseverityscaleshavebeenpublishedLengthoftimemissedhasdoubledintheNFLoverthepast10yearshavebeenscientificallyvalidatedNoneNosuchthingasaminorsevereGrade12or3concussionHowdotheyknowwhatsgoingoninsidethatheadReasontimemissedisgettinglongerisbcwearegettingsmarterwithhowwedealwiththemYOUNEEDTOHEALHeWasOutforaFewSecondsorHeHadaConvulsionItMustBeBadAlwayscheckneck
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