The validity and reliability of the Thai version of the Kujala score for patients with patellofemoral pain syndrome

Purpose: To develop a Thai version of the Kujala score and show the evaluation of the validity and reliability of the score.

Method: The Thai version of the Kujala score was developed using the forward–backward translation protocol. The 49 PFPS patients answered the Thai version of questionnaires including the Kujala score, Short Form-36 (SF-36) and International Knee Documentation Committee (IKDC) Subjective Knee Form. The validity between the scores has been tested. The reliability was assessed using test–retest reliability and internal consistency.

Results: The Thai version of the Kujala score showed a good correlation with Thai IKDC Subjective Knee Form (Pearson’s correlation coefficient; r?=?0.74: p?r?=?0.586, 0.571 and 0.524, respectively: p?p?p?Conclusion: The Thai version of the Kujala score has shown good validity and reliability. This score can be effectively used for evaluating Thai patients with patellofemoral pain syndrome.

• Implications for Rehabilitation

• The Kujala score is a self-administered questionnaire for patients with patellofemoral pain syndrome (PFPS).

• The validity and reliability of the Thai version of Kujala are compatible with other versions (Turkish, Chinese and Persian version).

• The Thai version of Kujala has been shown to have validity and reliability in Thai PFPS patients and can be used for clinical evaluation and also in the research work.