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Validation of the Polish versions of the Lower Limb Task Questionnaire, Lower Limb Functional Index, and Lower Limb Functional Index-10

Published:October 12, 2022DOI:https://doi.org/10.1016/j.jos.2022.09.009

      Abstract

      Background

      Physicians who treat patients with lower limb diseases should pay attention not only to the patients’ clinical condition but also to their individual needs and expectations. For this purpose, many different questionnaires can be employed. This study aimed to validate the Lower Limb Task Questionnaire (LLTQ), Lower Limb Functional Index (LLFI), and Lower Limb Functional Index-10 (LLFI-10) for their use in Polish conditions and to perform a mutual comparison and analysis of differences in subjective assessments by patients who undergo hip or knee arthroplasty.

      Methods

      The LLTQ, LLFI, and LLFI-10 were translated into Polish. A total of 103 patients who qualified for hip or knee arthroplasty at a University Hospital in from 2019 to 2021 were included in this study. The patients were asked to complete the Polish versions of the LLTQ, LLFI, LLFI-10, Lower Extremity Functional Scale (LEFS), and Short Form-36 four times – twice before and twice after their surgeries.

      Results

      The Polish versions of the LLTQ, LLFI, and LLFI-10 had good psychometric properties. One year after surgery, the Cohen's standard response mean revealed high improvement of limb functionality and thus quality of life among all patients. We observed better treatment outcomes among patients who had hip osteoarthritis.

      Conclusions

      The questionnaires were validated and can be used both in everyday health practice and in further research in Poland.

      Keywords

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