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The Capital Region of Denmark - a part of Copenhagen University Hospital
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An ultrasound score for knee osteoarthritis: a cross-sectional validation study

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OBJECTIVE: To develop standardized musculoskeletal ultrasound (MUS) procedures and scoring for detecting knee osteoarthritis (OA) and test the MUS score's ability to discern various degrees of knee OA, in comparison with plain radiography and the 'Knee injury and Osteoarthritis Outcome Score' (KOOS) domains as comparators.

METHOD: A cross-sectional study of MUS examinations in 45 patients with knee OA. Validity, reliability, and reproducibility were evaluated.

RESULTS: MUS examination for knee OA consists of five separate domains assessing (1) predominantly morphological changes in the medial compartment, (2) predominantly inflammation in the medial compartment, (3) predominantly morphological changes in the lateral compartment, (4) predominantly inflammation in the lateral compartment, and (5) effusion. MUS scores displayed substantial reliability and reproducibility, with interclass correlations coefficients ranging from 0.75 to 0.97 for the five domains. Construct validity was confirmed with statistically significant correlation coefficients (0.47-0.81, P < 0.01).

CONCLUSION: The MUS score suggested in this study was reliable and valid in detecting knee OA. In comparison with standing radiographs of the knees, the score detected all aspects of knee OA with relevant precision.

Original languageEnglish
JournalOsteoarthritis and cartilage / OARS, Osteoarthritis Research Society
Volume22
Issue number10
Pages (from-to)1675-91
Number of pages17
ISSN1063-4584
DOIs
Publication statusPublished - Oct 2014

ID: 44649704