Ice Hockey Summit II: zero tolerance for head hits and fighting

Aynsley M Smith¹, Michael J Stuart, David W Dodick+32

• ¹1Sports Medicine Center, Mayo Clinic, Rochester, MN; 2Department of Neurology, Mayo Clinic, Scottsdale, AZ; 3Department of Family Medicine and Community Health, University of Minnesota- Twin Cities, Minneapolis, MN; 4Department of Biomedical Engineering, University of Minnesota-Twin Cities, Minneapolis, MN; 5Department of Radiology, St. Elizabeth's Medical Center, Boston, MA; 6International Ice Hockey Federation and Hockey Canada and Ottawa Sport Medicine Centre, Ottawa, Ontario, Canada; 7Sport Medicine Centre, University of Calgary, Calgary, Alberta, Canada; 8Department of Orthopedics, University of Pittsburg Medical Center-St. Margaret, Pittsburg, PA; 9National Collegiate Athletic Association, Indianapolis, IN; 10Department of Psychiatry, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH; 11Division of Pediatric Neurology, Mattel Children's Hospital and David Geffen School of Medicine at UCLA, Los Angeles, CA; 12Simbex, LLC, Lebanon, NH; 13Department of Family Medicine, University of Washington, Seattle, Washington; 14School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada; 15Department of Psychiatry, University of Vermont Medical Center, Burlington, VT; 16Department of Radiology, Mayo Clinic, Rochester, MN; 17School of Kinesiology, University of Minnesota-Twin Cities, Minneapolis, MN; 18USA Hockey, Colorado Springs, CO; 19Department of Orthopaedics, University of New York at Buffalo, Buffalo, NY; 20School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada; 21Center for the Study of Traumatic Encephalopathy, Boston University School of Medicine, Boston, MA; 22Department of Exercise and Sport Science, The University of North Carolina, Chapel Hill, NC; 23Department of Nursing, Mayo Clinic, Rochester, MN; 24Department of Applied Human Sciences, University of Prince Edward Island, Charlottetown, Prince Edward Island, Canada; 25Department of Athletic Medicine, Princeton University, Princeton, New Jersey; 26