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Adaptation and Validation of the Foot Function Index-Revised Short Form into Polish.
Radosław Rutkowski1, Małgorzata Gałczyńska-Rusin2, Małgorzata Gizińska1
1Department of Physical Therapy and Sport Recovery, Poznan University of Physical Education, Królowej Jadwigi 27/39, 61-871 Poznan, Poland.
The Polish Foot Function Index-Revised Short Form (FFI-RS-PL) is a reliable tool for assessing foot function in rheumatoid arthritis (RA) patients. This validated questionnaire aids in the diagnosis and treatment of RA in Polish-speaking populations.
Area of Science:
- Rheumatology
- Orthopedics
- Health Outcomes Research
Background:
- Rheumatoid arthritis (RA) significantly impacts foot function and quality of life.
- Accurate assessment tools are crucial for managing RA-related foot complications.
- Existing tools require adaptation for specific linguistic and cultural contexts.
Purpose of the Study:
- To translate and culturally adapt the Foot Function Index-Revised Short Form (FFI-RS) into Polish (FFI-RS-PL).
- To evaluate the reliability and validity of the FFI-RS-PL in Polish patients with RA.
Main Methods:
- Linguistic adaptation of the FFI-RS questionnaire.
- Psychometric evaluation of the FFI-RS-PL in 211 RA patients.
- Convenience sampling from a rheumatological hospital in Śrem, Poland.
Main Results:
- High internal consistency (Cronbach's alpha = 0.95) and good test-retest reliability (ICC = 0.78–0.84).
- Strong correlation between FFI-RS-PL and Health Assessment Questionnaire-Disability Index (HAQ-DI).
- Mean patient age 58.9 years, 85% female.
Conclusions:
- The FFI-RS-PL is a reliable and valid instrument for assessing foot function in Polish RA patients.
- This tool can be effectively used in the clinical setting for diagnosis and treatment planning.
- Facilitates better management of foot-related issues in Polish-speaking RA populations.
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