Review Question - QID 6230

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Traumatic Anterior Shoulder Instability (TUBS) QID: 6230 (SAE08AN.70)

QID 6230 (Type "6230" in App Search)

Figure 40 shows the MRI scan of a 23-year-old man with a history of recurrent anterior shoulder instability. What is the most likely diagnosis?

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Humeral avulsion of the inferior glenohumeral ligament (HAGL lesion)

11%

18/162

Osseous Bankart lesion

24%

39/162

Perthes lesion

9/162

Anterior labroligamentous periosteal sleeve avulsion (ALPSA lesion)

42%

68/162

Glenolabral articular disruption (GLAD lesion)

12%

19/162

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The MRI scan shows an ALPSA lesion. This is also known as a medialized Bankart with medial displacement of the torn anterior labrum. During surgical stabilization, the labrum and periosteal sleeve must be mobilized and repaired laterally to reduce recurrent instability. A Perthes lesion is a nondisplaced labral tear. A GLAD lesion represents a nondisplaced anterior labral tear with an associated articular cartilage injury.