From the *Oslo Sports Trauma Research Center, University of Sport & Physical Education,
†Department of Orthopaedic Surgery, Ullevaal University Hospital,
‡National Sports Centre, and the
§Norwegian Skiing Federation, Oslo, Norway.
Acknowledgment date: October 24, 2002.
First revision date: January 2, 2003.
Acceptance date: March 28, 2003.
The manuscript submitted does not contain information about medical device(s)/drug(s).
Corporate Industry, Federal, Institutional, and Foundation funds were received in support of this work. No benefits in any form have been or will be received from a commercial party related directly or indirectly to the subject of this manuscript.
Address correspondence to Professor Roald Bahr, Oslo Sports Trauma Research Center, University of Sport & Physical Education, P.O. Box 4014 Ullevaal Stadion, Oslo 0806, Norway; E-mail: roald@nih.no
