Table 1

Description of the seven head impact injury cases

Case 1Case 2Case 3Case 4Case 5Case 6Case 7
DiagnosisConcussionConcussionACL injury, concussionConcussionConcussionConcussionConcussion
Severity (absence)8–28 days4–7 days>28 days4–7 days>28 days4–7 days>28 days
Season of injury2009/20102009/20102008/20092008/20092006/20072007/20082014/2015*
CompetitionOlympic Winter GamesOlympic Winter GamesWorld CupWorld CupWorld CupWorld CupWorld Cup
  • *Complied with new International Ski Federation (FIS) helmet rule at time of injury (ASTM F2040 (class A) and EN 1077 and additional EN 1077 test of 6.8 m/s).