Season 5 Case 20
Case 20
History: shoulder pain.
The doc only ordered 2 Views and the tech sent 2 images which looked almost identical. Here is one of them.
Diagnosis (and list at least 1 diagnostic clue)

Answer:
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Answer: posterior shoulder dislocation (see axillary below)
Clues:
1) both views look the same (internally rotated)
2) light bulb sign (humeral head looks like a light bulb)
3) loss of the normal half-moon overlap of the humeral head and the glenoid
4) irrregular posterior glenoid cortex c/w reverse “bony” Bankart
5) borderline “Rim sign” - widened glenohumeral distance (diagnostic is over 6mm, which this may be just under)
reference: https://radiopaedia.org/articles/posterior-shoulder-dislocation
