Coracoclavicular distance
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View Craig Hacking's current disclosuresAt the time the article was last revised Joshua Yap had no financial relationships to ineligible companies to disclose.
View Joshua Yap's current disclosures- Coracoclavicular (CC) distance
- CC distance
The coracoclavicular (CC) distance is an indicator of the integrity of the coracoclavicular ligament.
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Measurement
The coracoclavicular distance is assessed on frontal radiography of the shoulder or clavicle or the coronal projection of a CT or MRI as the distance between the superior cortex of the coracoid process and the undersurface of the clavicle where the coracoclavicular ligaments insert.
Interpretation
A normal coracoclavicular distance is between 11-13 mm and there should be no greater than 5 mm difference between the left and right sides 1. It is relevant for the determination of the Rockwood type of acromioclavicular joint injury.
See also
Quiz questions
References
- 1. Alyas F, Curtis M, Speed C, Saifuddin A, Connell D. MR Imaging Appearances of Acromioclavicular Joint Dislocation. Radiographics. 2008;28(2):463-79; quiz 619. doi:10.1148/rg.282075714 - Pubmed
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