The acromioclavicular (AC) joint is formed by the articulation of the distal clavicle and the scapular acromion
It is stabilized by the AC ligament, coracoclavicular (CC) ligament, an...
Pain to anterior or superior aspect of the shoulder following trauma
Pain exacerbated by moving arm across the chest, behind the back, or overhead
Cervical spine immobilization if indicated
Types IV, V, and VI require admission for operative repair
Types I and II can be discharged with orthopedic referral
Type III should h...
Type I and II AC injuries:
No increase in CC space
Conservative management with rest, ice, sling, and ROM/strength exercises
Type III injuries:
100% superior displacement of distal cla...
Bossart PJ, Joyce SM, Manaster BJ, et al. Lack of efficacy of weighted radiographs in diagnosing acute acromioclavicular separation. Ann Emerg Med. 1988;17:47–51.
831.04 Closed dislocation of acromioclavicular (joint)
840.0 Acromioclavicular (joint) (ligament) sprain
840.8 Sprains and strains of other specified sites of shoulder and upper arm
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