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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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introductionstatpearls· Introduction· item NBK499858

The acromioclavicular (AC) joint articulates the lateral end of the clavicle with the acromion as it projects anteriorly off the scapula. The AC joint provides stability and motion to the shoulder complex. It is a commonly injured shoulder joint, ranging from sprains to frank tears, occasionally requiring surgery.[1][2]