The ability of the Knee Osteoarthritis Outcome Score to detect changes over time is limited in patients with patellar instability due to substantial ceiling effect.

• Tác giả: Anne Gro Heyn Faleide, Trine Hysing-Dahl, Eivind Inderhaug, Per Arne Skarstein Waaler
• Ngôn ngữ: eng
• Ký hiệu phân loại: 027.663 *Libraries for persons with disabilities
• Thông tin xuất bản: United States : Journal of experimental orthopaedics , 2025
• Bộ sưu tập: NCBI
• ID: 742832

Tóm tắt

PURPOSE: The purpose of the current study was to evaluate important aspects of interpretability (floor and ceiling effects) for the Knee injury and Osteoarthritis Outcome Score (KOOS) in patients with patellar instability. Secondarily, the study aims to provide minimal important clinical difference (MICD) values for all subscales in this patient category. METHODS: Patients undergoing patella stabilising surgery with an individualised approach based on anatomic deviation were prospectively included if (1) ≥13 years of age at the time of surgery, (2) fluent in Norwegian and (3) able to understand and complete the questionnaires. Patients were excluded if they had concomitant bony and/or knee ligament injuries. KOOS was completed before and 6 months after surgery. RESULTS: A substantial ceiling effect was present in the KOOS subscales CONCLUSION: The substantial ceiling effect in the current implies that the KOOS is not suited to evaluate the long-term effect of treatment in patients with patellar instability. LEVEL OF EVIDENCE: Level II.