2025 ISAKOS Biennial Congress ePoster
Translation and Validation of The Spanish Version of The Banff Patellofemoral Instability Instrument 2.0 (BPII)
Juan Pablo Martinez-Cano, MD, MSc, PhD, Cali, Valle del Cauca COLOMBIA
Alejandro Gallego, MD, Jamundí, Valle del Cauca COLOMBIA
Johan Von Heideken, MD, PhD, Stockholm, MD SWEDEN
Fundación Valle del Lili, Cali, Valle, COLOMBIA
FDA Status Not Applicable
Summary
The Spanish version of BPII has internal consistency and reliability to be used in Spanish-speaking patients with patellofemoral instability.
ePosters will be available shortly before Congress
Abstract
Background
The Banff Patellofemoral Instability Instrument (BPII) 2.0 is a patient-reported outcome measure (PROM) disease-specific for patellofemoral instability. The BPII 2.0 was developed in English.
Purpose/Hypothesis: To translate and validate the BPII 2.0 into Spanish and evaluation of its psychometric properties.
Study Design: Cross-sectional study
Methods
The BPII 2.0 underwent forward and backward translations into Spanish according to COSMIN guidelines. Colombian children aged 9-18 years experiencing knee symptoms following a primary or recurrent patella dislocation were recruited from a hospital-based orthopedic clinic. Participants completed the Spanish BPII 2.0 and Spanish Kujala score during their initial visit (t0) and completed the Spanish BPII 2.0 one week later (t1). Internal consistency and test-retest reliability were assessed using intraclass correlation coefficients (ICCs). Concurrent validity of the Spanish BPII 2.0 with Kujala score was explored through Pearson correlation coefficients.
Results
Forty-six children [31 females (67%)], with a mean age of 15.1 (SD=2.0) years, participated. The average time since first patellofemoral dislocation was 22 months (SD=28). Of the 4 participants who previously received operative treatment for patellar instability, the mean time post-surgery was 12 months (range 7–18). All patients completed the BPII 2.0 at t0 and at t1, an average of 7 days later (range 6-7). Forty-five (98%) participants completed the Kujala score at t0. Five BPII 2.0 items exhibited floor or ceiling effects however no subscales demonstrated these effects. The total average Spanish BPII 2.0 demonstrated excellent internal consistency at both t0 (ICC 0.94; 95% confidence interval [CI] 0.92–0.96) and t1 (ICC 0.96; CI 0.93–0.97), along with excellent test-retest reliability (ICC 0.98; CI 0.97–0.99). Concurrent validity of the total Spanish BPII 2.0 with total Spanish Kujala score was good to strong (rho = 0.74; CI 0.57-0.85).
Conclusion
This study demonstrates that the Spanish BPII 2.0 has excellent internal consistency and test-retest reliability, suggesting this PROM is reliable and valid questionnaire.