title: Incidence and injury characteristics of medial collateral ligament injuries in male collegiate ice hockey players.
abstract: BACKGROUND
  Medial collateral ligament (MCL) injuries are the second most common injury resulting in player lost time in elite-level ice hockey.
  
  
  OBJECTIVE
  To determine the incidence and injury characteristics of knee MCL sprain in male collegiate ice hockey players.
  
  
  METHODS
  Case control.
  
  
  METHODS
  Athlete exposure data demographics, mechanism of injury, player position, time of injury occurrence (game vs practice), grade of MCL sprain, concomitant injuries, and lost time for cases were extracted from a computerized injury database of 8 college hockey seasons at 1 university. MCL injury rates were calculated. Injury characteristics were descriptively summarized. Simple linear regression was utilized to determine the relationship between the grade of MCL injury and player lost time.
  
  
  RESULTS
  There were 13 MCL injuries in 10 players. The overall incidence rate was 0.44 injuries per 1000 athlete exposures. Two players suffered reinjuries. Defensemen and forwards were equally represented. Contact with another player or the ice was the mechanism of injury in 77% of players. Grade 2 injuries were most common. The grade of injury predicted time lost from play (P < 0.01).
  
  
  CONCLUSIONS
  The lost time relates directly to the severity of injury.
authors.affiliation: Department of Orthopaedic Surgery, Saint John Regional Hospital, Saint John, New Brunswick, Canada.
authors.forename: John A
authors.initials: JA
authors.lastname: Grant
authors.affiliation: MedSport, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michigan.
authors.forename: Asheesh
authors.initials: A
authors.lastname: Bedi
authors.affiliation: School of Physical Therapy, Washington University School of Medicine.
authors.forename: Jennifer
authors.initials: J
authors.lastname: Kurz
authors.affiliation: Department of Athletics, University of Michigan, Ann Arbor, Michigan.
authors.forename: Richard
authors.initials: R
authors.lastname: Bancroft
authors.affiliation: MedSport, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michigan.
authors.forename: Bruce S
authors.initials: BS
authors.lastname: Miller
keywords: ice hockey; incidence; injury risk; lost time; medial collateral ligament