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November 18, 2024
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Instrument may assess kinesiophobia, outcomes in patients with patellofemoral instability

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Key takeaways:

  • The Banff Patellofemoral Instability Instrument 2.0 may assess kinesiophobia and pain catastrophizing in patients with instability.
  • The instrument had significant correlation with patient-reported outcomes.
Perspective from John P. Fulkerson, MD

Results showed significant correlation between patient-reported outcome measures for patients with patellofemoral instability and the Banff Patellofemoral Instability Instrument 2.0, which may assess kinesiophobia and pain catastrophizing.

The Banff Patellofemoral Instability Instrument 2.0 (BPII 2.0) is a disease-specific quality of life measure that assesses the physical, emotional and psychological aspects of patient function and recovery before potential surgery for recurrent lateral patellofemoral instability (LPI), according to the study.

Knee pain
The Banff Patellofemoral Instability Instrument 2.0 may assess kinesiophobia and pain catastrophizing in patients with instability. Image: Adobe Stock

“The BPII 2.0 does not explicitly measure kinesiophobia or pain catastrophizing; however, the significant statistical relationship of the [Tampa Scale for Kinesiophobia] TSK-11 and [Pain Catastrophizing Scale] PCS to the BPII 2.0 suggests that this information is being captured and reflected,” Laurie A. Hiemstra, MD, PhD, director of research at Banff Sport Medicine and associate professor in the department of surgery at the University of Calgary, and colleagues wrote in the study.

Laurie A. Hiemstra
Laurie A. Hiemstra

Hiemstra and colleagues performed a cohort study of 107 consecutive patients (mean age, 25.7 years) who were evaluated for recurrent LPI between January 2021 and October 2021.

Hiemstra and colleagues aimed to validate the BPII 2.0 with the TSK-11, the PCS and the ACL-Return to Sport after Injury (ACL-RSI) scale. According to the study, all patients had complete scores for all outcomes.

Overall, Hiemstra and colleagues found TSK-11, PCS and ACL-RSI scores significantly correlated with BPII 2.0 scores, which demonstrated higher kinesiophobia and pain catastrophizing scores for this patient population.

“The statistically significant correlations of the BPII 2.0 with kinesiophobia and pain catastrophizing indicate that the BPII 2.0 effectively assessed overlapping constructs of these psychological and emotional aspects of outcomes,” Hiemstra and colleagues wrote in the study. “These results build the criterion and concurrent validity of the BPII 2.0 and the other [patient-reported outcome measures] PROMs in patients with LPI.”

They added, “Ideally, the information captured by the BPII 2.0, TSK-11, PCS and ACL-RSI can be used to predict which patients would benefit from additional support, especially psychological and emotional. Identifying helpful interventions may allow treatment to be more specific, relevant, and efficient in restoring and maintaining the quality of life in patients with LPI. Future directions of this study will measure the responsiveness and power of predictability of these measures after surgical stabilization of the patella.”

Editor’s note: On Dec. 2, this article was corrected to clarify that patients included in the study did not undergo surgery. The BPII 2.0 is used to evaluate patients before potential surgery for recurrent patellofemoral instability. The editors regret the error.