Ultrasonographic Measures of Talar Cartilage Thickness Associate with Magnetic Resonance-Based Measures of Talar Cartilage Volume |
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| Institution: | 2. Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA;1. Human Movement Science Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States;2. Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States;3. Department of Orthopaedics, School of Medicine, University of North Carolina at Chapel Hill, NC, United States |
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| Abstract: | Our primary goal was to quantify associations between ultrasonographic (US) measurements of talar cartilage apparent thickness and magnetic resonance (MR)-based measures of talar cartilage volume in a heterogeneous sample of those with and without chronic ankle instability. Cartilage volume from MR and normalized cross-sectional area (CSA) and thickness from a transverse US image of the talar cartilage were calculated after 30 min of unloading. Overall talar and region of interest-specific morphology measures (i.e., volume, normalized CSA, thickness) were submitted for statistical analysis. Overall US-normalized CSA positively associated with the overall talar MR volume (r = 0.641, p < 0.001). Medial (r = 0.673, p < 0.001) and lateral US-normalized CSA (r = 0.584, p = 0.001) positively associated with MR volume in the anteromedial and anterolateral MR region of interest, respectively. No differences in US-based normalized CSA, thickness (p > 0.481) or MR-based volume (p > 0.287) were noted between the groups. US appears to be a clinically accessible and cost-effective method for evaluating average ankle cartilage apparent thickness. |
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