Coracoclavicular (CC) ligament injury is common with shoulder trauma. It is considered part of the spectrum of acromioclavicular joint injuries 2 and is not often an isolated injury. It is also often injured with clavicular fractures.
This injury is easy to miss, especially with presence of any obvious associated injury (sometimes called the "satisfaction of search").
- increase by 50% of the coracoclavicular distance, which is normally 11-13mm, is indicative of CC ligament disruption and AC joint dislocation 3
- coronal oblique plane parallel to the clavicle has been shown to be most effective 3:
- T1: best demonstrates normal anatomy
- T2 or PD FS: best demonstrates fluid/blood around an injured CC ligament
- 1. Yoo YS, Seo YJ, Noh KC et-al. Arthroscopically assisted anatomical coracoclavicular ligament reconstruction using tendon graft. Int Orthop. 2011;35 (7): 1025-30. doi:10.1007/s00264-010-1124-3 - Free text at pubmed - Pubmed citation
- 2. Nicholson DA, Lang I, Hughes P et-al. ABC of emergency radiology. The shoulder. BMJ. 1994;307 (6912): 1129-34. Free text at pubmed - Pubmed citation
- 3. Alyas F, Curtis M, Speed C et-al. MR imaging appearances of acromioclavicular joint dislocation. Radiographics. 2008;28 (2): 463-79. doi:10.1148/rg.282075714 - Pubmed citation
- 4. Wylie JD, Johnson JD, DiVenere J, Mazzocca AD. Shoulder Acromioclavicular and Coracoclavicular Ligament Injuries: Common Problems and Solutions. (2018) Clinics in sports medicine. 37 (2): 197-207. doi:10.1016/j.csm.2017.12.002 - Pubmed