Acromioclavicular joint (ACJ) osteoarthritis (OA) is a common degenerative condition of the shoulder.
Acromioclavicular joint osteoarthritis accounts for ~20% (range 12.7-24%) of patients with shoulder pain. It most commonly presents in the fourth decade 3.
Acromioclavicular joint osteoarthritis can be 1:
- primary: age-related
- secondary: usually to prior trauma
Typical imaging findings of osteoarthritis are present, however, these are mostly asymptomatic. Effusion and capsular thickening may be present but again, these correlate poorly with symptoms 1,2. Bone marrow edema may be useful in discriminating for symptomatic OA 1,4.
Treatment and prognosis
Ultrasound-guided corticosteroid injections into the acromioclavicular joint are useful for both diagnostic and therapeutic purposes 5. For persistent symptomatic ACJ OA, open or arthroscopic distal clavicular resection can be considered 3.
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- 2. Scott Mcdonald, Melanie A. Hopper. Acromioclavicular Joint Disease. (2015) Seminars in Musculoskeletal Radiology. 19 (03): 300. doi:10.1055/s-0035-1549323 - Pubmed
- 3. Gerard Farrell, Lyn Watson, Hemakumar Devan. Current evidence for nonpharmacological interventions and criteria for surgical management of persistent acromioclavicular joint osteoarthritis: A systematic review:. (2019) Shoulder & Elbow. 11 (6): 395-410. doi:10.1177/1758573219840673 - Pubmed
- 4. Veen EJD, Donders CM, Westerbeek RE, Derks RPH, Landman EBM, Koorevaar CT. Predictive findings on magnetic resonance imaging in patients with symptomatic acromioclavicular osteoarthritis. (2018) Journal of shoulder and elbow surgery. 27 (8): e252-e258. doi:10.1016/j.jse.2018.01.001 - Pubmed
- 5. Krill MK, Rosas S, Kwon K, Dakkak A, Nwachukwu BU, McCormick F. A concise evidence-based physical examination for diagnosis of acromioclavicular joint pathology: a systematic review. (2018) The Physician and sportsmedicine. 46 (1): 98-104. doi:10.1080/00913847.2018.1413920 - Pubmed