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Turkish version of the Anterior Cruciate Ligament Quality of Life questionnaire

  • knee
  • Published:
Knee Surgery, Sports Traumatology, Arthroscopy Aims and scope

Abstract

Purpose

To test the measurement properties of Turkish version of the Anterior Cruciate Ligament Quality of Life (ACL-QOL) questionnaire.

Methods

One hundred and nineteen patients with ACL reconstruction (ACL-R) completed internal consistency, agreement, construct validity, floor and ceiling effect analyses. Eighty out of 119 patients with ACL-R completed Turkish version of the ACL-QOL questionnaire twice for the test–retest reliability. A subgroup of thirty-nine patients undergoing physiotherapy were also asked to answer the ACL-QOL questionnaire, the Lysholm Knee Scale (LKS), Knee Outcome Survey—Activities of Daily Living Scale (KOS–ADLS) and the short form 36 (SF-36) at pre-operative, 16th week and 2 years post-operatively to assess responsiveness.

Results

The questionnaire had high internal consistency (Cronbach’s α = 0.95). The paired t test showed no significant difference between the test–retest means. The intraclass correlation was excellent for reliability and agreement in five domains and overall score (ICC 0.95, 0.95, 0.97, 0.95, 0.96 and 0.95; p < 0.001). The standard error of measurement and the minimum detectable change (MDC95) were found to be 3.1 points and 8.7 points, respectively. The questionnaire showed a fair correlation (r = 0.23) with LKS and a poor correlation (r = 0.14) with KOS-ADLS; good and very good construct validity (r = 0.51, r = 0.62) with SF-36 physical component score and mental component score, respectively. No ceiling and floor effects were observed except the subdomain of ‘work-related concerns’ (22.9 %). A dramatic effect size was demonstrated at the 16th week (2.1) and 2 years (1.1) of follow-up.

Conclusion

Turkish version of the ACL-QOL questionnaire is a reproducible and responsive instrument that can be used in clinical studies.

Level of evidence

Diagnostic study, Level I.

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Acknowledgments

The authors would like to thank physiotherapist Dilber Coskunsu for her outstanding work in patient recruitment and data management.

Conflict of interest

The authors declare that they have no conflict of interest.

Author information

Authors and Affiliations

  1. Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Hacettepe University, 06100, Ankara, Turkey

    Gizem Irem Kinikli, Inci Yuksel & Ozgur Ahmet Atay

  2. Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, İstanbul University, Istanbul, Turkey

    Derya Celik

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  1. Gizem Irem Kinikli
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  2. Derya Celik
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  4. Ozgur Ahmet Atay
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Correspondence to Gizem Irem Kinikli.

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Kinikli, G.I., Celik, D., Yuksel, I. et al. Turkish version of the Anterior Cruciate Ligament Quality of Life questionnaire. Knee Surg Sports Traumatol Arthrosc 23, 2367–2375 (2015). https://doi.org/10.1007/s00167-014-3404-8

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  • DOI: https://doi.org/10.1007/s00167-014-3404-8

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