Presentation
Presents with new onset seizure and shoulder pain with limited range of motion.
Patient Data
Increased space between humeral head and glenoid. Shoulder appears to be in internal rotation. Subtle posterior displacement of humeral head on scapular Y view.
The humeral head is dislocated posteriorly and impacted against the posterior glenoid. Bony defect with cortical discontinuity identified along the anterolateral surface of the humeral head (reverse Hill-Sachs lesion).
Multiple small bony fragments seen posterior to the posterior glenoid, likely representing fracture fragments (reverse bony Bankart lesion).
Case Discussion
Classic CT findings of acute posterior shoulder dislocation with impaction fracture of the humeral head (reverse Hill-Sachs lesion) and fractures of the posterior glenoid (reverse bony Bankhart lesion).
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