Posterior clavicle dislocation

Case contributed by Stefan Tigges
Diagnosis certain

Presentation

Left chest pain after motor vehicle collision.

Patient Data

Age: 20 years
Gender: Male
x-ray

No plain radiographic findings of left clavicle fracture or dislocation.

Dislocation left sternoclavicular joint with posterior displacement of the left proximal clavicle. Small anteriorly displaced fracture fragment, but no shaft fracture. Small left pleural effusion with passive atelectasis of the adjacent lung.

x-ray

Status post plate and screw fixation left sternoclavicular joint, otherwise normal.

Case Discussion

Plain radiographs may be normal (as in this case) in patient's with a posteriorly dislocated clavicle. CT is much more sensitive. In addition, CT (preferably with intravenous contrast) can assess for mediastinal injuries that may result because of displacement of the clavicle into the mediastinum.

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