Posterior shoulder dislocation

Case contributed by Huda B. Gharbia
Diagnosis almost certain

Presentation

shoulder pain and recurrent dislocation.

Patient Data

Age: 20 years
Gender: Male

Posterior subluxation of humeral head relative to the glenoid fossa.

In axial images show mild rounding of posteroinferior glenoid rim, with thickened posterior glenoid labrum and articular cartilage.

Mild joint effusion.

Case Discussion

Posterior shoulder dislocation, with sloping of posteroinferior glenoid rim and thickened overlying posterior labrum, suggestive mild glenoid dysplasia, which cause recurrent dislocation.

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