Narrowed coracohumeral distance
Shoulder pain on abduction and internal rotation.
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Narrowed coraco-humeral distance, mild subscapularis and severe supraspinatus tendinosis. Fliud-filled subcoracoid bursa.
The normal average distance between the coracoid process and the humeral head is 9-11 mm 1. A distance of 5 mm or less is highly associated with subscapularis tendinosis and tendon tears 2. The distance is better assessed in internal rotation, which isn't routine practice.
- 1. Giaroli EL, Major NM, Lemley DE et-al. 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 citation
- 2. Richards DP, Burkhart SS, Campbell SE. Relation between narrowed coracohumeral distance and subscapularis tears. Arthroscopy. 2005;21 (10): 1223-8. doi:10.1016/j.arthro.2005.06.015 - Pubmed citation