In this prospective study patients with dislocated fractures of the lateral clavicle (Jäger&Breitner I-III, Neer I-III) are enrolled. All patients are surgically treated using the locking compression plate (LCP) for the superior anterior clavicle (Synthes®). Functional outcome is recorded using the Munich Shoulder Questionnaire (MSQ) allowing for qualitative self-assessment of the Shoulder Pain and Disability Index (SPADI), of the Disability of the Arm, Shoulder and Hand (DASH) score and of the Constant Score. Acromioclavicular joint stability is evaluated using the Taft-Score.