Posterior shoulder dislocation with reverse Hill-Sachs lesion and displaced fracture
Presentation
Left shoulder pain after falling.
Patient Data
Posterior dislocation and displaced fracture of the left shoulder head with a wide zone of bone marrow edema.
Note full-thickness heterogeneous high signal within the subscapularis tendon.
The long biceps tendon is intact.
Partial tear of the supraspinatus tendon.
Anterior and posterior labral tears as well.
Massive joint effusion.
Case Discussion
Posterior shoulder dislocation is uncommon as well as reverse Hill-Sachs lesions. Displaced fractures of the proximal humerus are not a common complication of posterior shoulder dislocation.
Anterior and posterior labral tears, subscapularis, and supraspinatus tendons partial tears are also revealed.
Shoulder MRI is an indispensable non-invasive tool for labral and rotator cuff tears evaluation.
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