Citation, DOI, disclosures and article data
Citation:
Gaillard F, Knipe H, Weerakkody Y, et al. Subcoracoid impingement. Reference article, Radiopaedia.org (Accessed on 21 Mar 2025) https://doi.org/10.53347/rID-2120
Subcoracoid impingement is an unusual form of shoulder impingement and results from narrowing of the coracohumeral interval (space between the tip of the coracoid and the humerus).
Patients present with anterior shoulder pain when the arm is held at the side (adducted, internally rotated and in forward flexion - also known as military parade rest position) 2.
Narrowing is typically seen in the setting of prior rotator cuff repair, but occasionally also results from congenital narrowing or trauma.
The structures affected are 2:
- subscapularis tendon
- long head of the biceps tendon
- middle glenohumeral ligament
Ultrasound
May show pooling fluid in subcoracoid bursa.
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1. Phoebe Kaplan, Clyde A. Helms, Robert Dussault et al. Musculoskeletal MRI. (2001) ISBN: 0721690270 - Google Books
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2. Giaroli E, Major N, Lemley D, Lee J. Coracohumeral Interval Imaging in Subcoracoid Impingement Syndrome on MRI. AJR Am J Roentgenol. 2006;186(1):242-6. doi:10.2214/AJR.04.0830 - Pubmed
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3. Okoro T, Reddy VR, Pimpelnarkar A. Coracoid impingement syndrome: a literature review. (2009) Current reviews in musculoskeletal medicine. 2 (1): 51-5. doi:10.1007/s12178-009-9044-9 - Pubmed
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4. Osti L, Soldati F, Del Buono A, Massari L. Subcoracoid Impingement and Subscapularis Tendon: Is There Any Truth? Muscles Ligaments Tendons J. 2013;3(2):101-5. doi:10.11138/mltj/2013.3.2.101 - Pubmed
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5. Park J, Chai J, Kim D, Cha S. Dynamic Ultrasonography of the Shoulder. Ultrasonography. 2018;37(3):190-9. doi:10.14366/usg.17055 - Pubmed
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