Physiotherapy theory and practice
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Physiother Theory Pract · Oct 2013
Validation of the Persian version of Functional Index Questionnaire (FIQ) and Modified FIQ in patients with patellofemoral pain syndrome.
The aim of this investigation was to culturally translate and validate the Functional Index Questionnaire (FIQ) and Modified FIQ (MFIQ) in patients with patellofemoral pain syndrome (PFPS). A sample of 100 patients with PFPS completed the FIQ and MFIQ, and Short-Form 36 (SF-36) Health Survey in the first session. The FIQ and MFIQ were re-administered to a sample of 47 patients to evaluate test-retest reliability. ⋯ A total of two factors were detected for each questionnaire. There were moderate to low correlations between the Persian FIQ/MFIQ and SF-36. Persian FIQ and MFIQ are two reliable and valid outcome measures of functional limitation and it seems that they are suitable for use in clinical practice of patients with chronic PFPS.