Reliability and validity of the Turkish version of the patellofemoral pain severity scale in patients with patellofemoral pain syndrome

PurposeThe aim of this study was to investigate the Turkish validity and reliability of the Patellofemoral Pain Severity Scale (PSS) in patients with patellofemoral pain (PFP) and to adapt it to Turkish.Materials and methodsA pilot study was conducted with 10 patients. 123 patients underwent PSS test-retest at 24-48 h intervals. Construct validity, correlations of PSS with other scales Timed Up and Go Test (TUG), Stair Climbing and Descending Test (SCD), Anterior Knee Pain Scale (AKPS), Tegner Activity Scale (TAS), Lysholm Knee Scoring Scale (LDSS), Knee Outcome Survey Activities of Daily Living Scale (KOS-ADL) were evaluated.ResultsThe content validity index value of the scale was 0.95. The overall internal consistency (Cronbach alpha: 0.88) was high. Item-total correlations of the scale were between 0.51 and 0.7. In the evaluation of the convergent validity of the PSS, it was found that there was a positive correlation between the PSSS and TUG and SCD, and a negative correlation between the PSS, TAS, LDSS and KOS-ADL (p = 0.000).ConclusionsIn this study, it was determined that the PSSS scale had good internal consistency, test-retest validity and adequate construct validity when compared with the KOS-ADL, LDSS and AKPS. Patellofemoral pain severity scale is a scale that assesses pain during functional activities, providing more specific information and a multidimensional perspective.Patellofemoral pain severity scale is a reliable and valid measurement tool to assist in planning physiotherapy programs and patient education.Turkish version of the Patellofemoral pain severity scale was found to be reliable and valid for patients with patellofemoral Pain.Turkish version of the Patellofemoral pain severity scale can assist in the assessment and identification of patellofemoral pain patients, followed by individualized treatment and rehabilitation.