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Uptodate Reference Title
Acromioclavicular injury Type II
Acromioclavicular injury Type II
Type II AC injuries represent a complete tear of the AC ligaments and partial injury of the CC ligaments. In this radiograph of a type II injury, note the subtle difference in AC joint position (arrow), and slight increase in CC distance. The patient was nontender over the right CC ligaments, suggesting that only the AC ligaments are significantly injured.