PMID- 32340786 OWN - NLM STAT- MEDLINE DCOM- 20210929 LR - 20210929 IS - 1436-2023 (Electronic) IS - 0949-2658 (Linking) VI - 26 IP - 1 DP - 2021 Jan TI - Validation and defining the minimal clinically important difference of the Japanese version of the IKDC Subjective Knee Form. PG - 149-155 LID - S0949-2658(20)30061-0 [pii] LID - 10.1016/j.jos.2020.02.010 [doi] AB - BACKGROUND: This study aimed to validate and determine the minimal clinically important difference (MCID) in the Japanese version of the International Knee Documentation Committee Subjective Knee Form (Japanese IKDC-SKF) for patients with anterior cruciate ligament (ACL) injuries. METHODS: This prospective study was performed using the COnsensus-based Standards for the selection of health status Measurement INstruments (COSMIN) guideline to assess the measurement properties of reliability, responsiveness, validity, and interpretability of the Japanese IKDC-SKF. RESULTS: A total of 152 patients were enrolled in the study. The Japanese IKDC-SKF had excellent internal consistency [Cronbach's alpha (95% confidence interval, CI) was 0.90 (0.88-0.92), and the test-retest reliability [intraclass correlation coefficient, ICC(2,1) (95% CI)] was 0.97 (0.94-0.98). The content validity (r), which was interpretable between the Japanese IKDC-SKF and the Japanese Anterior Cruciate Ligament questionnaire 25 was -0.87 (P < 0.001). The construct validity for the IKDC-SKF was 86% (six of seven hypotheses were consistent with the results), also indicating high validity. Responsiveness of the Japanese IKDC-SKF was confirmed, with an acceptable area under the curve of 0.81 and a large effect size (Cohen's d of 0.8). There were no floor or ceiling effects. The MCID for the Japanese IKDC-SKF for ACL injury was 10.7. CONCLUSIONS: Our results indicate that the Japanese version of the IKDC-SKF is a reliable, valid, and responsive measurement instrument with which to evaluate the physical function of patients with ACL injuries. CI - Copyright (c) 2020 The Japanese Orthopaedic Association. Published by Elsevier B.V. All rights reserved. FAU - Huang, Hui AU - Huang H AD - Department of Orthopaedic Surgery, Juntendo University School of Medicine, Tokyo, Japan. FAU - Nagao, Masashi AU - Nagao M AD - Department of Orthopaedic Surgery, Juntendo University School of Medicine, Tokyo, Japan; Medical Technology Innovation Center, Juntendo University, Tokyo, Japan; Clinical Research and Trial Center, Juntendo University, Tokyo, Japan; Graduate School of Health and Sports Science, Juntendo University, Chiba, Japan. Electronic address: nagao@juntendo.ac.jp. FAU - Arita, Hitoshi AU - Arita H AD - Department of Orthopaedic Surgery, Juntendo University School of Medicine, Tokyo, Japan. FAU - Nishio, Hirofumi AU - Nishio H AD - Department of Orthopaedic Surgery, Juntendo University School of Medicine, Tokyo, Japan; Graduate School of Health and Sports Science, Juntendo University, Chiba, Japan. FAU - Kaneko, Haruka AU - Kaneko H AD - Department of Orthopaedic Surgery, Juntendo University School of Medicine, Tokyo, Japan. FAU - Saita, Yoshitomo AU - Saita Y AD - Department of Orthopaedic Surgery, Juntendo University School of Medicine, Tokyo, Japan. FAU - Ishijima, Muneaki AU - Ishijima M AD - Department of Orthopaedic Surgery, Juntendo University School of Medicine, Tokyo, Japan. FAU - Takazawa, Yuji AU - Takazawa Y AD - Department of Orthopaedic Surgery, Juntendo University School of Medicine, Tokyo, Japan; Graduate School of Health and Sports Science, Juntendo University, Chiba, Japan. FAU - Ikeda, Hiroshi AU - Ikeda H AD - Department of Orthopaedic Surgery, Juntendo University School of Medicine, Tokyo, Japan. FAU - Kaneko, Kazuo AU - Kaneko K AD - Department of Orthopaedic Surgery, Juntendo University School of Medicine, Tokyo, Japan. LA - eng PT - Journal Article DEP - 20200424 PL - Japan TA - J Orthop Sci JT - Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association JID - 9604934 SB - IM MH - *Anterior Cruciate Ligament Injuries/diagnosis MH - Humans MH - Japan MH - *Minimal Clinically Important Difference MH - Prospective Studies MH - Reproducibility of Results MH - Surveys and Questionnaires MH - Translations COIS- Declaration of Competing Interest None. EDAT- 2020/04/29 06:00 MHDA- 2021/09/30 06:00 CRDT- 2020/04/29 06:00 PHST- 2019/12/05 00:00 [received] PHST- 2020/02/03 00:00 [revised] PHST- 2020/02/07 00:00 [accepted] PHST- 2020/04/29 06:00 [pubmed] PHST- 2021/09/30 06:00 [medline] PHST- 2020/04/29 06:00 [entrez] AID - S0949-2658(20)30061-0 [pii] AID - 10.1016/j.jos.2020.02.010 [doi] PST - ppublish SO - J Orthop Sci. 2021 Jan;26(1):149-155. doi: 10.1016/j.jos.2020.02.010. Epub 2020 Apr 24.