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![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Luxation_acromioclaviculaire.jpeg/265px-Luxation_acromioclaviculaire.jpeg)
Acromio-clavicular disjunction (left shoulder) — note that the shoulder is lower and the "piano key"; the scar on the photograph and the screws on the radiograph are from internal fixation repair of a former trauma, without any connection with the present trauma
Photo credit: Christophe Dang Ngoc Chan