ArticleOrthopaedic journal of sports medicine2026
Introducing the Subjective Knee Value for Daily Activity (SKV-d) and Sport (SKV-s) as Single-Item Measures to Assess Knee Function in Athletes.
Article in Orthopaedic journal of sports medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Patient-reported outcome measures (PROMs) are essential for assessing knee function; however, their complexity can hinder efficiency. The subjective knee value (SKV) offers a simple alternative, but lacks distinction between daily activities and sports. Purpose: We propose the SKV for daily activity (SKV-d) and sport (SKV-s). This study aimed to validate the SKV-d and SKV-s as simple and accurate tools for assessing knee function. Study Design: Cohort Study (Diagnosis); Level of evidence, 3. Methods: A total of 79 consecutive athletic patients (mean age, 39 years; 49% women) with knee-related issues were included and categorized into 4 groups between September and November 2024. PROMs were collected according to clinic standards: knee osteoarthritis (n = 21), Knee Society Clinical Rating System (KSS) (Knee Score and KSS Function), anterior cruciate ligament injury (n = 19), International Knee Documentation Committee subjective knee evaluation form (IKDC-S), patellar instability (n = 12), Kujala Anterior Knee Pain Scale (AKPS), and focal cartilage lesion or isolated meniscal tear (n = 27). Patients completed the SKV, SKV-d, and SKV-s, along with the validated scores mentioned above. Validity, reliability, floor/ceiling effects, and differences among the 3 single-item scores were assessed. Results: The SKV-s correlated strongly with the AKPS ( Conclusion: The SKV-d and SKV-s demonstrated acceptable validity with the SKV, the IKDC-S, and the AKPS, and were reliable, with significant differences between each other and the SKV. Both the SKV-d and the SKV-s may help distinguish between daily activities and sports and for assessing knee function in athletes; however, they should not replace commonly used PROMs.
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