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Reliability and validity of the Western Ontario Shoulder Instability Index (WOSI) in the Japanese population

  • Original Article
  • Published:
Journal of Orthopaedic Science

Abstract

Background

The Western Ontario Shoulder Instability Index (WOSI) questionnaire is a disease-specific self-evaluated measurement tool used for patients with shoulder instability. The purpose of this study was to evaluate the reliability and validity of the WOSI Japanese version for the Japanese population.

Methods

The WOSI Japanese version was prepared by use of several steps including translation, back translation, and verification by the author and owner of the WOSI. Reliability (internal consistency and reproducibility) and validity were then tested for 85 patients with shoulder instability. All patients completed the WOSI Japanese version, Quick DASH, and SF-36, and underwent assessment of the Rowe rating scale for the purpose of internal consistency and validity. Fifty-nine of the patients repeated the WOSI 2 weeks after the first examination for assessment of test–retest reproducibility.

Results

Both internal consistency (0.84 for Cronbach’s alpha) and reproducibility (Pearson’s r = 0.91, intraclass correlation coefficient = 0.91) indicated the reliability of the WOSI Japanese questionnaire was good. Comparison with the Rowe rating scale (p < 0.001) also showed validity was good. The correlation coefficient between the WOSI Japanese version and the Quick DASH (Pearson’s r = 0.62) was higher than that between the WOSI Japanese version and the SF-36 (Pearson’s r = 0.10–0.36 for subscales).

Conclusion

The WOSI Japanese questionnaire is a reliable self-assessment tool that is comparable with the original English version. We therefore recommend use of the WOSI Japanese version when evaluating patients with shoulder instability in the Japanese population.

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References

  1. Owens BD, Duffey ML, Nelson BJ, DeBerardino TM, Taylor DC, Mountcastle SB. The incidence and characteristics of shoulder instability at the United States Military Academy. Am J Sports Med. 2007;35:1168–73.

    Article  PubMed  Google Scholar 

  2. Larrain MV, Botto GJ, Montenegro HJ, Mauas DM. Arthroscopic repair of acute traumatic anterior shoulder dislocation in young athletes. Arthroscopy. 2001;17:373–7.

    Article  PubMed  CAS  Google Scholar 

  3. te Slaa RL, Wijffels MP, Brand R, Marti RK. The prognosis following acute primary glenohumeral dislocation. J Bone Joint Surg Br. 2004;86:58–64.

    PubMed  CAS  Google Scholar 

  4. Dawson J, Fitzpatrick R, Carr A. The assessment of shoulder instability. The development and validation of a questionnaire. J Bone Joint Surg Br. 1999;81:420–6.

    Article  PubMed  CAS  Google Scholar 

  5. Kirkley A, Griffin S, McLintock H, Ng L. The development and evaluation of a disease-specific quality of life measurement tool for shoulder instability. The Western Ontario Shoulder Instability Index (WOSI). Am J Sports Med. 1998;26:764–72.

    PubMed  CAS  Google Scholar 

  6. Kirkley A, Griffin S, Richards C, Miniaci A, Mohtadi N. Prospective randomized clinical trial comparing the effectiveness of immediate arthroscopic stabilization versus immobilization and rehabilitation in first traumatic anterior dislocations of the shoulder. Arthroscopy. 1999;15:507–14.

    Article  PubMed  CAS  Google Scholar 

  7. Westerheide KJ, Dopirak RM, Snyder SJ. Arthroscopic anterior stabilization and posterior capsular plication for anterior glenohumeral instability: a report of 71 cases. Arthroscopy. 2006;22:539–47.

    Article  PubMed  Google Scholar 

  8. Salomonsson B, Abbaszadegan H, Revay S, Lillkrona U. The Bankart repair versus the Putti-Platt procedure: a randomized study with WOSI score at 10-year follow-up in 62 patients. Acta Orthop. 2009;80:351–6.

    Article  PubMed  Google Scholar 

  9. Krueger D, Kraus N, Pauly S, Chen J, Scheibel M. Subjective and objective outcome after revision arthroscopic stabilization for recurrent anterior instability versus initial shoulder stabilization. Am J Sports Med. 2011;39:71–7.

    Article  PubMed  Google Scholar 

  10. Plancher KD, Lipnick SL. Analysis of evidence-based medicine for shoulder instability. Arthroscopy. 2009;25:897–908.

    Article  PubMed  Google Scholar 

  11. Salomonsson B, Ahlström S, Dalén N, Lillkrona U. The Western Ontario Shoulder Instability Index (WOSI): validity, reliability, and responsiveness retested with a Swedish translation. Acta Orthop. 2009;80:233–8.

    Article  PubMed  Google Scholar 

  12. Hofstaetter JG, Hanslik-Schnabel B, Hofstaetter SG, Wurnig C, Huber W. Cross-cultural adaptation and validation of the German version of the Western Ontario Shoulder Instability index. Arch Orthop Trauma Surg. 2010;130:787–96.

    Article  PubMed  Google Scholar 

  13. Rowe CR, Patel D, Southmayd WW. The Bankart procedure: a long-term end-result study. J Bone Joint Surg Am. 1978;60:1–16.

    PubMed  CAS  Google Scholar 

  14. Imaeda T, Toh S, Wada T, Uchiyama S, Okinaga S, Kusunose K, Sawaizumi T. Impairment Evaluation Committee, Japanese Society for Surgery of the Hand. Validation of the Japanese Society for Surgery of the Hand Version of the Quick Disability of the Arm, Shoulder, and Hand (Quick DASH-JSSH) questionnaire. J Orthop Sci. 2006;11:248–53.

    Article  PubMed  Google Scholar 

  15. Fukuhara S, Bito S, Green J, Hsiao A, Kurokawa K. Translation, adaptation, and validation of the SF-36 Health Survey for use in Japan. J Clin Epidemiol. 1998;51:1037–44.

    Article  PubMed  CAS  Google Scholar 

  16. Fukuhara S, Ware JE Jr, Kosinski M, Wada S, Gandek B. Psychometric and clinical tests of validity of the Japanese SF-36 Health Survey. J Clin Epidemiol. 1998;51:1045–53.

    Article  PubMed  CAS  Google Scholar 

  17. Salter K, Jutai J, Foley N, Teasell R. Outcome measures in stroke rehabilitation. 2005. Accessed cited 2006 October 5, 2006). Available from: http://www.ebrsr.com.

  18. Romeo AA, Bach BR Jr, O’Halloran KL. Scoring systems for shoulder conditions. Am J Sports Med. 1996;24:472–6.

    Article  PubMed  CAS  Google Scholar 

  19. Skare O, Schrøder CP, Reikerås O, Mowinckel P, Brox JI. Efficacy of labral repair, biceps tenodesis, and diagnostic arthroscopy for SLAP Lesions of the shoulder: a randomised controlled trial. BMC Musculoskelet Disord. 2010;11:228.

    Article  PubMed  Google Scholar 

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Acknowledgments

We sincerely thank Drs. Norimasa Takahashi, Nobuaki Kawai, and Hisahiro Tonotsuka for their help.

Conflict of interest

The authors did not receive and will not receive any benefits or funding from any commercial party related directly or indirectly to the subject of this article.

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Correspondence to Eiji Itoi.

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Hatta, T., Shinozaki, N., Omi, R. et al. Reliability and validity of the Western Ontario Shoulder Instability Index (WOSI) in the Japanese population. J Orthop Sci 16, 732–736 (2011). https://doi.org/10.1007/s00776-011-0141-4

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  • DOI: https://doi.org/10.1007/s00776-011-0141-4

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