Anterior labroligamentous periosteal sleeve avulsion lesion

An anterior labroligamentous periosteal sleeve avulsion (ALPSA) lesion is similar to a Bankart lesion, in that it too is usually due to anterior shoulder dislocation and involves the anterior inferior labrum

Unlike the Bankart lesion in which the labrum and glenoid periosteum is avulsed from the underlying glenoid, an ALPSA lesion involves mobilisation of the labrum which remains attached to the periosteum overlying the glenoid (thus sleeve). The clue is the medial displacement and inferior shifting of the inferior glenohumeral ligament (IGHL) complex. A Hill-Sachs lesion may be seen in association. As a result, an ALPSA lesion may heal (as opposed to a Bankart lesion which does not), however it can do so in an abnormal position requiring identification and early surgical repair.

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Article Information

rID: 910
Synonyms or Alternate Spellings:
  • ALPSA lesion
  • Anterior labroligamentous periosteal sleeve avulsion (ALPSA) lesion
  • ALPSA
  • ALPSA lesions

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Cases and Figures

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    Figure 1: illustration - common labral injuries
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