TY - JOUR
T1 - Reliability and Validity of the Arabic Translated Version of the Norwich Patellar Instability Score and the Banff Patellar Instability Instrument 2.0
AU - Alomar, Abdulaziz Z.
AU - Alghamdi, Faisal A.
AU - Alhowimel, Ahmed S.
AU - Alodaibi, Faris
AU - Alimam, Dalia
N1 - Publisher Copyright:
© The Author(s) 2025.
PY - 2025/6
Y1 - 2025/6
N2 - Background: The Banff Patellar Instability Instrument 2.0 (BPII 2.0) and Norwich Patellar Instability (NPI) score are reliable, valid patient-reported outcome (PRO) measures for evaluating patellofemoral instability. Both have been translated and culturally adapted to various languages to document PROs accurately. However, no validated Arabic versions of these PRO measures exist. Purpose: To translate the BPII 2.0 and NPI score into Arabic and assess the reliability and validity of the translated questionnaires. Study Design: Cohort study (diagnosis); Level of evidence, 3. Methods: The NPI score and BPII 2.0 were translated into Arabic based on standard guidelines recommended by the Consensus-based Standards for the selection of health Measurement Instruments. Patients who underwent patellofemoral stabilization surgery were included in this study. Respondents completed the translated versions of the questionnaires 1 week apart. The validity of the translation was assessed using Cronbach alpha, and Pearson correlation coefficient (r) was used to determine the relationship between the Arabic versions of the NPI score, BPII 2.0, and Kujala Score (KS). Test-retest reliability was assessed using the intraclass correlation coefficient. Results: The translated versions were assessed in 83 patients and found reliable. The response rate was 94.3%. A negative correlation was found between the KS and NPI score (r = −0.80; P <.05) and a positive correlation with BPII (r = 0.84; P <.05). A significant negative correlation was noted between the NPI and the BPII (r = −0.71). For first-time responses, Cronbach alpha for the NPI score was 0.80, with an intraclass correlation coefficient of 0.80 (0.68-0.83), while the BPII was 0.91 (0.87-0.93) and the KS was 0.80 (0.73-0.86). No floor or ceiling effects were observed. Conclusion: The study demonstrated that the translated Arabic versions of the BPII and NPI score are valid and reliable for measuring PROs in Arabic-speaking patients with patellofemoral instability.
AB - Background: The Banff Patellar Instability Instrument 2.0 (BPII 2.0) and Norwich Patellar Instability (NPI) score are reliable, valid patient-reported outcome (PRO) measures for evaluating patellofemoral instability. Both have been translated and culturally adapted to various languages to document PROs accurately. However, no validated Arabic versions of these PRO measures exist. Purpose: To translate the BPII 2.0 and NPI score into Arabic and assess the reliability and validity of the translated questionnaires. Study Design: Cohort study (diagnosis); Level of evidence, 3. Methods: The NPI score and BPII 2.0 were translated into Arabic based on standard guidelines recommended by the Consensus-based Standards for the selection of health Measurement Instruments. Patients who underwent patellofemoral stabilization surgery were included in this study. Respondents completed the translated versions of the questionnaires 1 week apart. The validity of the translation was assessed using Cronbach alpha, and Pearson correlation coefficient (r) was used to determine the relationship between the Arabic versions of the NPI score, BPII 2.0, and Kujala Score (KS). Test-retest reliability was assessed using the intraclass correlation coefficient. Results: The translated versions were assessed in 83 patients and found reliable. The response rate was 94.3%. A negative correlation was found between the KS and NPI score (r = −0.80; P <.05) and a positive correlation with BPII (r = 0.84; P <.05). A significant negative correlation was noted between the NPI and the BPII (r = −0.71). For first-time responses, Cronbach alpha for the NPI score was 0.80, with an intraclass correlation coefficient of 0.80 (0.68-0.83), while the BPII was 0.91 (0.87-0.93) and the KS was 0.80 (0.73-0.86). No floor or ceiling effects were observed. Conclusion: The study demonstrated that the translated Arabic versions of the BPII and NPI score are valid and reliable for measuring PROs in Arabic-speaking patients with patellofemoral instability.
KW - Arabic translation
KW - Banff Patellar Instability Instrument
KW - Norwich Patellar Instability score
KW - patellar instability
KW - patellofemoral instability
KW - patellofemoral pain syndrome
KW - patient-reported outcome
UR - http://www.scopus.com/inward/record.url?scp=105007613605&partnerID=8YFLogxK
U2 - 10.1177/23259671251340989
DO - 10.1177/23259671251340989
M3 - Article
AN - SCOPUS:105007613605
SN - 2325-9671
VL - 13
JO - Orthopaedic Journal of Sports Medicine
JF - Orthopaedic Journal of Sports Medicine
IS - 6
M1 - 23259671251340989
ER -