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Anterior labroligamentous periosteal sleeve avulsion (ALPSA)

Case contributed by: Dr Roberto Schubert

Presentation:

MRI performed after reduced anterior shoulder dislocation.

Patient Data:

Age: 24

Gender: Male

Race: Caucasian

From the case: Anterior labroligamentous periosteal sleeve avulsion (ALPSA)

Modality: MRI

Gradient Echo

Case Discussion:

The labral-ligamentous complex is displaced medially, rolling up itself underneath intact periosteum. The labrum is still attached to the capsule, but avulsed from the glenoid.