richard g. ellenbogen, m.d. chairman, uw department of neurological surgery co-chairman nfl head,...
TRANSCRIPT
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Richard G. Ellenbogen, M.D.Chairman, UW Department of Neurological SurgeryCo-Chairman NFL Head, Neck and Spine Committee
Samuel R. Browd, M.D., Ph.D.UW Assistant Professor Neurological Surgery
Attending Neurosurgeon, Seattle Children's Hospital
Sports Concussion:Injury
Signs & SymptomsReturn to Play
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OBJECTIVES
1. A REVIEW OF HEAD INJURY IN THE ATHLETE
2. A REVIEW OF THE SYMPTOMS AND SIGNS OF CONCUSSION
3. A REVIEW OF THE TOOLS AND GUIDES IN RETURN TO PLAY DECISIONS
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THE CONCUSSION CONTROVERSY IN SPORTS TODAY
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Any Given Sunday
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• 17+ ARTICLES IN 2009 ALONE
• Forum for Football Brain Injuries Set for Houston– 01/07/10
• Lawmakers Grill Doctor for His Views on Concussions– 01/04/10
• Silence on Concussions Raises Risks of Injury – Alan Schwarz 09/15/07
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Richard Ellenbogen, M.D.
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Zackery Lystedt
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ConcussionInternational Conference on Concussion in Sport– Vienna 2001, Prague 2004, Zurich 2008
– “THIS IS A WORLDWIDE PROBLEM AFFECTING BOTH SEXES, STUDENT/ATHLETES, PROFESSIONALS AND THE MILITARY“
• (Ellenbogen, NFL Committee)
– CONCUSSION: • “Complex pathophysiologic process
affecting the brain, induced by traumatic biomechanical forces.”
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Concussion Definition
– COMPLEX COMPLEX • no “easy” concussions!no “easy” concussions!
– PATHOPHYSIOLOGY PATHOPHYSIOLOGY • RARELY structural!RARELY structural!
– TRAUMA INDUCEDTRAUMA INDUCED• an impact to the head or body that is transmitted to the headan impact to the head or body that is transmitted to the head
– LOSS OF CONSCIOUSNESSLOSS OF CONSCIOUSNESS• < 10% of players < 10% of players
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Concussion Definition
Common features include:
• Rapid onset of usually short-lived neurological impairment which typically resolves spontaneously.
• A range of clinical symptoms that may or may not involve loss of consciousness (LOC).
Less than 10% of sports concussions involve loss of consciousness Less than 10% of sports concussions involve loss of consciousness
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Epidemiology of Severe Injuries Among United States High School Athletes
• National High School Sports-Related Injury Surveillance System 2005-2007
• Nationally representative sample of 100 US high schools
• 9 sports (football, wrestling, baseball, softball, girls’ volleyball, and boys’ and girls’ soccer and basketball)
• Loss of >21 days of sports participation
Darrow, CJ et al. Am J Sports Medicine Vol 7, #9 2009
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Sport Concussion (% >21 days)
Boy’s football 5.9%
Boy’s soccer 11.8%
Girl’s soccer 7.7%
Girl’s volleyball 8.9%
Boy’s basketball 1.2%
Girl’s basketball 6.6%
Boy’s wrestling 3.3%
Boy’s baseball 1.4%
Girl’s softball 1.2%
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World-Wide:Australia
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Epidemiology of Concussionsin High School and Collegiate Sports
• Data from the High School Reporting Information Online System and the NCAA Injury Surveillance System
– 5.9% of all collegiate athletic injuries
– 8.9% of all high school athletic injuries
– Concussion rates were higher in college, but concussions were a higher proportion of all high school athletic injuries
Gessel LM et al. “Concussions Among United States High School and Collegiate Athletes” Journal of Athletic Training 2007; 42:495-503
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High School Sports
• Concussion rate per 1000 athlete-exposures
• Football 0.47• Girl’s soccer 0.36• Boy’s soccer 0.22• Girl’s basketball 0.21• Boy’s basketball 0.07
Gessel LM et al. “Concussions Among United States High School and Collegiate Athletes” Journal of Athletic Training 2007; 42:495-503
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High School Sports
• 16.8 % of concussed athletes had suffered a previous concussion in that season or in a prior season
– Greater than 20% of concussions in boys’ and girls’ basketball were recurrent concussions
• Girls took longer than boys to recover
Gessel LM et al. “Concussions Among United States High School and Collegiate Athletes” Journal of Athletic Training 2007; 42:495-503
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Recurrent Injuries:High School Athletes
• 11.6% of the recurrent injuries were concussions• Swenson, DM et al. Am J Sports Medicine 2009;37(4)
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Brain Injury-Related Fatalities American Football Players
Different Levels of Play (1945-1999)
0
50
100
150
200
250
300
350
400
fatalities
High schoolSandlotCollegeProfessional
374
76 3314
Cantu and Mueller. Neurosurgery 2003;52:846-853
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0
50
100
150
200
250
300
350
400
450
Fatalities
SubduralUnknownFractureAneurysmEdema
Cantu and Mueller. Neurosurgery 2003;52:846-853
429
40 18 6 4
Brain Injury-Related Fatalities American Football Players
Injury Type (1945-1999)
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Catastrophic Head InjuriesHigh School and College Football
• National Center for Catastrophic Sports Injury Research data from 1989-2002
– 94 cases• 75 subdural hematomas • 10 subdural with diffuse brain swelling• 5 diffuse brain swelling• 4 AVM or aneurysm
– 92 cases were in high school players
» Boden et al. AJSM 2007; 35: 1075 - 1081
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• 59% of athletes had a previous history of concussion(s)
• 71% of those injuries occurred in the same season as the catastrophic injury
• 39% of athletes at time of catastrophic injury were playing with residual symptoms from a previous concussion
» Boden et al. AJSM 2007; 35: 1075 - 1081
Catastrophic Head InjuriesHigh School and College Football
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Classification/Grading Guides Conflicting and do NOT guide therapy!!!
Guideline Grade 1 Grade 2 Grade 3
Cantu 1. No LOC
2. Posttraumatic amnesia <30 min
1. LOC > 5 min OR
2. Posttraumatic amnesia > 30 min
1. LOC > 5 min OR
2. Posttraumatic amnesia >24˚
Colorado 1. Confusion w/out amnesia
2. No LOC
1. Confusion w/ amnesia
2. No LOC
1. LOC
(of any duration)
AAN 1. Transient confusion
2. No LOC
3. Concussion syx, ms change resolve w/in 5 min
1. Transient confusion
2. No LOC
3. Concussion syx, ms change >15 min
1. LOC
(brief or prolonged)
Cantu
(Revised)
1. No LOC OR
2. Posttraumatic amnesia signs/syx < 30 min
1. LOC < 1 min OR
2. Posttraumatic amnesia >30 min, <24˚
1. LOC > 1min OR
2. Posttraumatic amnesia >24˚
OR
3. Post concussion signs/syx > 7d
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A Ding Is Not Always Just A Ding
1.6 to 2.3 million sports concussions per year Center for Disease Control 2006
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Acute Signs and Symptoms:Suggestive of Concussion
COGNITIVE SOMATIC AFFECTIVE
•Confusion•Post-traumatic amnesia •Retrograde amnesia Loss of consciousness •Disorientation•Feeling “in a fog,” “zoned out”•Vacant stare•Inability to focus•Delayed verbal and motor responses•Slurred/incoherent speech•Excessive drowsiness
•Headache•Fatigue•Disequilibrium, dizziness•Nausea/vomiting•Visual disturbances (photophobia, blurry/double vision)•Phonophobia
•Emotional lability•Irritability
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PathophysiologyPathophysiology
• In a concussion, certain chemical levels are altered at the In a concussion, certain chemical levels are altered at the cellular levelcellular level
• Blood supply to the brain decreasesBlood supply to the brain decreases
• The brain’s demand for glucose increasesThe brain’s demand for glucose increases
• Mismatch in fuel supply and demandMismatch in fuel supply and demand– Neuronal tissue vulnerabilityNeuronal tissue vulnerability
• Brain needs time to recoverBrain needs time to recover
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Game-Day: Evaluation & Treatment
Pre-Game
It is essentialessential to:
– Implement a game-day medical plan specific to concussion.
– Understand the indications for cervical spine immobilization and emergency transport.
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Game-Day: Evaluation & Treatment
On-Field
It is essentialessential to:
• Evaluate the injured athlete on-the-field in a systematic fashion
• Determine initial disposition – emergency transport vs. sideline evaluation
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Recognizing a Concussion Recognizing a Concussion Signs and SymptomsSigns and Symptoms
Signs observed by trainer preferably, coach, parent, teammates include:
• Appears dazed or stunned
Is confused about assignment
Forgets plays
Is unsure of game, score, or opponent
Moves clumsily
Answers questions slowly
Loses consciousness
Shows behavior or personality changes
Can’t recall events prior to hit
Can’t recall events after hit.
Symptoms reported by athlete include:
• Headache
Nausea
Balance problems or dizziness
Double or fuzzy vision
Sensitivity to light or noise
Feeling sluggish
Feeling foggy or sluggish
Concentration or memory problems
Confusion
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Game-Day: Evaluation & Treatment
Sideline
It is essentialessential to:
– Not leave the player unsupervised
– Determine disposition • home with observation
• transport to hospital
– Provide post-event instructions to the athlete and others • e.g., regarding alcohol, medications, physical exertion and
medical follow-up
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THE EVIDENCE FOR RETURN TO PLAY
THERE IS NONE
IT IS:
JUDGEMENTJUDGEMENTEXPERIENCEEXPERIENCE
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Return to PlayReturn to Play
Same Day
It is essentialessential to understand:
– A (youth) player with diagnosed (or suspected) concussion should should not be allowed to return to playnot be allowed to return to play on the same day as the injury.
• McCory P, et al. Consensus Statement on Concussion in Sport 3rd International Conference on Concussion in Sport
– Held in Zurich, November 2008. » Clin J Sport Med 2009;19:185-200
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Post-GamePost-GameManagement by Healthcare Provider: Return to Play
• Obtain a comprehensive history• current concussion• any previous concussion
• Determine the need for further evaluation and consultation.
• Determine return-to-play status
– ***CONCUSSION FOLLOWED BY ***CONCUSSION FOLLOWED BY SYMPTOMSSYMPTOMS AFTER 20 MINUTES OF REST… AFTER 20 MINUTES OF REST…
• DISQUALIFIED FROM PLAYING ON THE DAY OF INJURY– COGNITIVE REST AS WELL (NO SCHOOL!)
• HIGH SCHOOL IS EASY: “WHEN IN DOUBT, SIT THEM OUT”“WHEN IN DOUBT, SIT THEM OUT”
– COLLEGE/PROS IF AFTER 20 MINUTES OF REST AND THEY HAVE NO EXERTIONAL SYMPTOMS THEY MAY RETURN
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Post-GamePost-GameManagement by Healthcare Provider: Return to Play
– LOC or AmnesiaLOC or Amnesia
• Disqualified from immediate RTPDisqualified from immediate RTP– no tool is sufficient to determine RTPno tool is sufficient to determine RTP
» SCATII, SAC or BESSSCATII, SAC or BESS
• Athletes under 18 years old and Females Athletes under 18 years old and Females – longer period of neurocognitive longer period of neurocognitive
recovery after concussionrecovery after concussion
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Copyright restrictions may apply.
McCrea, M. et al. JAMA 2003;290:2556-2563.
Symptom, Cognitive, and Postural Stability Recovery in Concussion and Control Participants
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PRINCIPALS OF RTP
• 3 or more CONCUSSIONS in a SEASON– 3 MONTH SYMPTOM FREE PERIOD BEFORE THEY RETURN TO A COLLISION SPORT
• 3 or more CONCUSSIONS in a SEASON with SLOWED RECOVERY– THEY SIT OUT FOR THE SEASON OR MAYBE PERMANENTLY
• DISQUALIFY:– NEURO EXAM IS NOT RETURNED TO NORMAL– NEUROPSYCH BATTERY IS ABNORMAL– SYMPTOMS
• Take into account the SEVERITY OF THE BLOW AND PROLOGNATION OF THE AMNESIA
• ABNORMAL MRI: 1 YEAR OF REST
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PRINCIPALS OF RTP
• Understand:
– Brief LOC (seconds, not minutes)
– Amnesia, as well as the number and duration of additional signs and symptoms (and neuropsychological data) are more accurate in predicting severity and outcome.
– The treatment of and the RTP decision for the athlete with concussion must be individualized
– Manage by symptoms, not by grades
• Many return to play guidelines are weighed to LOC– NOT A GOOD IDEA!
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PRINCIPALS OF RTP
• Consider factors which may affect RTP, including:
– Severity of the current injury– Previous concussions (number, severity, proximity)– Significant injury in response to a minor blow– Age (developing brain may react differently to trauma than mature
brain)– Sport– Learning disabilities– Depression, anxiety– Migraine headaches
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PRINCIPALS OF RTP
• Neuropsychological testing
– Post-injury neuropsychological test data are more useful if compared to the athlete’s pre-injury baseline.
– It is unclear what type and content of test data are most valuable.
– It is only one component of the evaluation process.
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Graduated Return to Play in 1 Slide
Rehab Stages (1-6) Functional Exercise Objective
1. No activity Complete physical & cognitive rest (No school, if indicated!)
Recovery of cognitive function
2. Light aerobic exercise Walking, swimming or stationary bike; no resistance training
HR
3. Sport-specific exercise Running drills; no head impact activity
Add movement
4. Non-contact training drills
Progression to more complex training drills; start progressive resistance training
Exercise, coordination, cognitive load
5. Full contact practice After Medical Clearance Only; Normal activity
Restores confidence & assess functional skills
6. Return to play Normal game/competition Prevent Next Injury
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PRINCIPALS OF RTP
• Physical and cognitive rest may be necessary including cognitive rest from school
• Determine the athlete is asymptomatic at rest before resuming any exertional activity.
• Utilize progressive aerobic and resistance exercise challenge tests prior to full return to play.
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Sport Concussion Assessment Tool
• SCAT 2
• Developed from International Conference on Concussion in Sport
– Zurich 2009
• Used during and after game time for RTP
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• Update of the 2005 SCAT1
• Used by medical and health professionals
• 4 pages
• 20 minutes to administer
• Athletes 10 years old and above
• Preseason baseline
Sport Concussion Assessment Tool
• Evaluates for one or more of the following:– Symptoms– Signs– Impaired brain function– Abnormal behavior– Impaired Neuro Function
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22 questions
Do the symptoms get worse with physical activity? Yes No☐ ☐Do the symptoms get worse with mental activity? Yes No☐ ☐
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At what venue are we today?
Which half is it now?
Who scored last?
What team did we play last week?
Did we win last week?
0 1
0 1
0 1
0 1
0 1
Scoring: 1 point for each correct answer (maximum of 5)Validated for sideline diagnosis
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1. Orientation
2. Immediate Memory
3. Concentration
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• What month is it?• What is the date today?• What is the day of the
week?• What year is it?• What time is it right now?
(within 1 hour)
0 1
0 1
0 1
0 1
0 1
Scoring: 1 point for each correct answer (maximum of 5)
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List Trial 1
Trial 2
Trial 3 Alternative Word List
elbow 0 1 0 1 0 1 candle babyapple 0 1 0 1 0 1 paper monkeycarpet 0 1 0 1 0 1 sugar perfumesaddle 0 1 0 1 0 1 sandwich sunsetbubble 0 1 0 1 0 1 wagon iron
Scoring: 1 point for each correct answer (maximum of 15)
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List Alternative Digit List4-9-3 0 1 6-2-9 5-2-6
3-8-1-4 0 1 3-2-7-9 1-7-9-56-2-9-7-1 0 1 1-5-2-8-6 3-8-5-2-7
7-1-8-4-6-2 0 1 5-3-9-1-4-8 8-3-1-9-6-4
Scoring: 1 point for each correct answer (maximum of 4)
Digits Backward
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• Months in reverse order
Dec-Nov-Oct-Sept-Aug-Jul-Jun-May-Apr-Mar-Feb-Jan
Scoring: 1 point for entire sequence correct
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Instructions:• “Which foot do you kick with?” (i.e.
dominant foot)• 20 seconds per stance• Shoes off• Remove ankle taping• Place hands on hips• Close eyes
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A. Double leg stanceFeet shoulder-width apart
B. Single leg stanceLift the dominant foot (30° hip flexion, 45° knee
flexion)
C. Tandem stanceDominant foot in the front
Scoring: 1 point for each error (max. of 10 per stance) Final score is 30 minus total errors
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Finger-to-nose task:
• Athlete is to touch their nose and then your finger
• Athletes fail if they don’t touch their nose, don’t fully extend the elbow, or don’t perform 5 repetitions
Scoring: 1 point for five repetitions in < 4 seconds (maximum of 1)
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• Delayed recall
List
elbowapplecarpetsaddlebubble
Scoring: 1 point for each recalled word (maximum of 5)
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• Symptom score (22)• Physical signs score (2)• GCS (15)• Maddocks’ score (5)• Orientation (5)• Immediate memory (5)• Concentration (5)• Balance examination (30)• Coordination exam (1)• Delayed recall (5)
Max is 100/100Lowest is 3/100
SCAT 2: Scoring
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• Recognition of a potential concussion
• Initial screening (SCAT2, SAC, Maddocks) to obtain post-injury baseline
• Avoid leaving the athlete unsupervised
• Serial neurologic exams
• Determine disposition
• Post-game instructions and follow-up screening
Goals
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• SCAT2 is just a screening tool
• It won’t catch every concussion– Use your judgment
• Only gives you one moment in time– Things change and they change quickly
–“When in doubt, sit them out"
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SECOND IMPACT SYNDROME• Rare
• Limited to teenagers or under 18 in all cases
• No cases in NFL/NHL/MLB
• Medical review after witnessed 1st impact
• Documented ongoing symptoms until 2nd impact
• Witnessed 2nd impact followed by rapid deterioration
• Evidence of cerebral swelling without other cause
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Recurrent Concussion: Who Cares?
• 2- 4X increased risk for recurrent concussion
– More symptoms
– Last longer
– Small but repetitive hits
• Cumulative brain trauma: – CHRONIC TRAUMATIC
ENCEPHALOPTHY
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Sports Concussions: Education, Awareness, Action
Washington State Heads Up:
Concussion in Youth Sports Campaign
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Washington State Road Show
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Educate or Legislate?
Stan Herring, M.D.
Richard Adler, J.D.
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Engrossed House Bill 1824Requiring the adoption of policies for the management of
concussion and head injury in youth sports.
• All student athletes and parents/guardians sign an information sheet regarding concussion prior to each season
• School districts to work with the Washington Interscholastic Activities Association (WIAA) to develop information and policies on educating coaches, youth athletes, and parents about the nature and risk of concussion including the dangers of premature return to practice or play after a concussion
• Any athlete suspected of suffering a concussion is removed from play until they receive written clearance for return to practice and play by a licensed health care provider trained in the evaluation and management of concussions
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Zackery Lystedt Law
May 14th, 2009
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Is This Practice/Game More Important Than:Is This Practice/Game More Important Than:
• The rest of the season?The rest of the season?
• The rest of the athlete’s career?The rest of the athlete’s career?
• The rest of the athlete’s life?The rest of the athlete’s life?
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CONCLUSIONCONCLUSION
Do not let a injured athlete back into practiceDo not let a injured athlete back into practice or games until they have been evaluated and cleared or games until they have been evaluated and cleared
in writing by a licensed healthcare provider trained in in writing by a licensed healthcare provider trained in the evaluation and management of concussions.the evaluation and management of concussions.
That is not only the LAW; That is not only the LAW; It Is The Right Thing To Do!It Is The Right Thing To Do!
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