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Abstract #2291

Diagnostic performance of susceptibility-weighted magnetic resonance imaging (SWMRI) for the assessment of subacromial spur formation causing subacromial impingement syndrome (SAIS)

Dominik Nörenberg1,2, Marco Armbruster1, Yi-Na Bender2, Thula Walter2, Gerd Diederichs2, Bernd Hamm2, Ben Ockert3, and Marcus R. Makowski2,4

1Department of Clinical Radiology, Munich University Hospitals Campus Großhadern, Germany, Munich, Germany, 2Department of Radiology, Charité, Berlin, Germany, Berlin, Germany, 3Department of Trauma and Orthopedic Surgery, Shoulder and Elbow Service, Munich University Hospitals Campus Großhadern, German, Munich, Germany, 4King’s College London, Division of Imaging Sciences and Biomedical Engineering, London, United Kingdom, London, United Kingdom

Shoulder pain is regarded as the second most common musculoskeletal disorder in the general population. 44 % of shoulder pain syndromes are related to subacromial shoulder impingement (SAIS) due to rotator cuff tear (RCT) and glenohumeral joint arthritis. Especially subacromial spur formation is associated with SAIS and RCT. Our study demonstrates that SWMRI allows for a reliable detection and precise 3D-localization of subacromial spur formation under the coracoacromial arch in patients with SAIS and provides superior evaluation of diamagnetic spur formation compared to standard shoulder MRI using conventional radiography as a reference.

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