• Sutida Sakunkaruna, Yosawin Sakunkaruna, and Prasert Sakulsriprasert.
• J Med Assoc Thai. 2015 Jun 1; 98 Suppl 5: S81-5.

ObjectiveTo conduct a cross-cultural adaptation and determine the test-retest reliability of the Thai version of the Kujala Patellofemoral questionnaire (KPQ).Material And MethodThe present study comprised two phases: cross-cultural adaptation and test-retest reliability. The KPQ was first translated and cross-culturally adaptedfrom English to Thai. The content validity test was conducted, and the final version of the Thai version of Kujala Patellofemoral Questionnaire was developed. Forty knee pain patients were enrolled in this study to determine test-retest reliability ofthe final version ofthis questionnaire. All 40 subjects were patients from the Physical Therapy Center; Faculty ofPhysical Therapy, Mahidol University with a diagnosis of anterior knee pain by physical therapists. They were asked to complete the questionnaires; the 1st session after registration and 2,d session 30 minutes afterfinishing thefirst administration. For statistical analysis, the intraclass correlation coefficient (ICCa") method was used to determine test-retest reliability.ResultsAll 40 subjects (36 women, 4 men; with age range 18-56 years) were assessed twice with 30-minute time interval. Thirteen questions indicated strong reliability, ranging from ICC2, 0.8 to 1.0 and the total score was ICC2, 0.98.ConclusionThe Thai version of the Kujala Patellofemoral Questionnaire was cross-culturally adapted, validated, and presented with excellent test-retest reliability. Regarding clinical implication, this questionnaire is now available for Thai physical therapists in evaluating Thai knee pain patients.

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