From the Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU) (HKa, HKo, J-SA), Tokyo, Japan; Department of Orthopaedic Surgery, Dokkyo Medical University Saitama Medical Center, Koshigaya, Japan (HKa); Department of Radiology, Faculty of Medicine, University of British Columbia, Vancouver, Canada (BBF); Department of Diagnostic Radiology, Tokyo Medical and Dental University (TMDU), Tokyo, Japan (TA); Institute of Sport and Exercise Medicine, Department of Exercise, Sport and Lifestyle Medicine, Faculty of Medicine and Health Science, Stellenbosch University, Stellenbosch, South Africa (WD); and International Olympic Committee Research Center, Stellenbosch, South Africa (WD).
All correspondence should be addressed to: Hiroki Katagiri, MD, PhD, Department of Orthopaedic Surgery, Dokkyo Medical University Saitama Medical Center, Koashigaya City, 2-1-50 Minamikoshigaya, Koshigaya, Saitama, Japan.
BRF is an associate editor of the British Journal of Sports Medicine and a member of the IOC Medical and Scientific Commission Games Group, and WD is an associate editor of the BJSM.
This study was approved by the institutional review board in the Dokkyo Medical University Saitama Medical Center (IRB) (research protocol identification number: #21044).
HKa designed the initial plan, conducted the study, and completed the final manuscript. JA, HKo, and AT collected the data and analyzed the data. BF and WD designed the initial plan and completed the final manuscript. All authors read and approved the final manuscript.
Financial disclosure statements have been obtained, and no conflicts of interest have been reported by the authors or by any individuals in control of the content of this article.
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