title: Injury Risk Estimation Expertise: Interdisciplinary Differences in Performance on the ACL Injury Risk Estimation Quiz.
abstract: BACKGROUND
  Simple observational assessment of movement is a potentially low-cost method for anterior cruciate ligament (ACL) injury screening and prevention. Although many individuals utilize some form of observational assessment of movement, there are currently no substantial data on group skill differences in observational screening of ACL injury risk.
  
  
  OBJECTIVE
  The purpose of this study was to compare various groups' abilities to visually assess ACL injury risk as well as the associated strategies and ACL knowledge levels. The hypothesis was that sports medicine professionals would perform better than coaches and exercise science academics/students and that these subgroups would all perform better than parents and other general population members.
  
  
  METHODS
  Cross-sectional study; Level of evidence, 3.
  
  
  METHODS
  A total of 428 individuals, including physicians, physical therapists, athletic trainers, strength and conditioning coaches, exercise science researchers/students, athletes, parents, and members of the general public participated in the study. Participants completed the ACL Injury Risk Estimation Quiz (ACL-IQ) and answered questions related to assessment strategy and ACL knowledge.
  
  
  RESULTS
  Strength and conditioning coaches, athletic trainers, physical therapists, and exercise science students exhibited consistently superior ACL injury risk estimation ability (+2 SD) as compared with sport coaches, parents of athletes, and members of the general public. The performance of a substantial number of individuals in the exercise sciences/sports medicines (approximately 40%) was similar to or exceeded clinical instrument-based biomechanical assessment methods (eg, ACL nomogram). Parents, sport coaches, and the general public had lower ACL-IQ, likely due to their lower ACL knowledge and to rating the importance of knee/thigh motion lower and weight and jump height higher.
  
  
  CONCLUSIONS
  Substantial cross-professional/group differences in visual ACL injury risk estimation exist. The relatively profound differences in injury risk estimation accuracy and their potential implications for risk screening suggest the need for additional training and outreach (see http://www.ACL-IQ.org).
  
  
  CONCLUSIONS
  Parents and sport coaches would likely benefit from training or use of decision support tools such as the ACL nomogram to assess ACL injury risk. In addition, physicians and other sports medicine professionals may also benefit from improving risk estimation performance to reach clinical biomechanical standards.
authors.affiliation: College of Human Medicine, Michigan State University, East Lansing, Michigan, USA.; Department of Health and Human Performance, Northern Michigan University, Marquette, Michigan, USA.
authors.forename: Erich J
authors.initials: EJ
authors.lastname: Petushek
authors.affiliation: The Applied Cognition & Cognitive Engineering (AC2E) Research Group, University of Huddersfield, Huddersfield, UK.
authors.forename: Paul
authors.initials: P
authors.lastname: Ward
authors.affiliation: Department of Psychology and National Institute for Risk and Resilience at the University of Oklahoma, Norman, Oklahoma, USA.; Center for Adaptive Behavior and Cognition, Max Planck Institute for Human Development, Berlin, Germany.
authors.forename: Edward T
authors.initials: ET
authors.lastname: Cokely
authors.affiliation: Division of Sports Medicine, Cincinnati Children's Hospital, Cincinnati, Ohio, USA.; Departments of Pediatrics and Orthopaedic Surgery, University of Cincinnati, Cincinnati, Ohio, USA.; The Micheli Center for Sports Injury Prevention, Waltham, Massachusetts, USA.
authors.forename: Gregory D
authors.initials: GD
authors.lastname: Myer
keywords: injury prevention; knee biomechanics; movement analysis; observational screening; visual inspection