Presentation
Recurrent shoulder dislocation with shoulder pain and limited movement.
Patient Data
Age: 30 years
Gender: Male
From the case:
Posterior shoulder instability
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- posterior dislocation of the left shoulder joint with posterior translation of the humerus relative to the glenoid
- the humeral head shows internal rotation with light-bulb appearance on the CT scout view
- depression fracture anteromedial humerus is noted (Trough line sign).
- fracture posterior inferior glenoid bone (reverse Bankart lesion)
- Bennett lesion with linear calcification adjacent to focal sclerosis in the posterior osseous glenoid as well as posterior labro-capsular periosteal sleeve avulsion (POLPSA) lesion
- mild joint effusion
Case Discussion
Posterior shoulder instability (dislocation) with fracture of the anteromedial humerus (Trough line sign), reverse osseous Bankart lesion as well as Bennett lesion of the posterior inferior labrum with POLPSA lesion and joint effusion.