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  • Title: Sensitivity to change and association of three-dimensional meniscal measures with radiographic joint space width loss in rapid clinical progression of knee osteoarthritis.
    Author: Roth M, Emmanuel K, Wirth W, Kwoh CK, Hunter DJ, Eckstein F.
    Journal: Eur Radiol; 2018 May; 28(5):1844-1853. PubMed ID: 29178030.
    Abstract:
    OBJECTIVE: To determine whether 3D meniscal measures had similar sensitivity to longitudinal change as cartilage thickness; to what extent these measures are associated with longitudinal joint space width (JSW) change; and whether the latter associations differ between minimum (mJSW) and fixed-location JSW. METHODS: Two-year changes in medial meniscal position and morphology, cartilage thickness (MRI) and minimum and fixed-location JSW (radiography) were determined in 35 Osteoarthritis Initiative knees [12 men, age: 67 (51-77) years; 23 women, age: 65 (54-78) years], progressing from baseline Kellgren-Lawrence grade ≤2 to knee replacement within 3-5 years. Multiple linear regression assessed the features contributing to JSW change. RESULTS: Meniscal measures, cartilage thickness and JSW displayed similar sensitivity to change (standardised response mean≤|0.76|). Meniscal changes were strongly associated with JSW change (r≤|0.66|), adding ≤20% to its variance in addition to cartilage thickness change. Fixed-location JSW change (multiple r2=72%) was more strongly related to cartilage and meniscal change than mJSW (61%). Meniscal morphology explained more of fixed-location JSW and meniscal position more of mJSW. CONCLUSION: Meniscal measures provide independent information in explaining the variance of radiographic JSW change. Fixed-location JSW appears to be more reflective of structural change than mJSW and, hence, a potentially superior measure of structural progression. KEY POINTS: • 3D positional/morphological meniscal measures change in rapidly progressing knees. • Similar sensitivity to 2-year change of quantitative meniscal/cartilage measures in rapid progression. • Changes in meniscal measures are strongly associated with radiographic JSW change. • Meniscal change provides information to explain JSW variance independent of cartilage. • Fixed-location JSW reflects structural disease stage more closely than minimum JSW.
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