Posterior labrocapsular periosteal sleeve avulsion lesion

A posterior labrocapsular periosteal sleeve avulsion (or POLPSA) lesion occurs when trauma causes the posterior scapular periosteum and posterior labrum of the glenohumeral joint to strip off leading to a redundant recess.





Impingement of the humeral head onto the posterior labrum and capsule due to recurrent subluxation or posterior dislocation.

Radiographic features

MR arthrography

May show fluid extending between the posterior labrum and the glenoid, with stripping of the subjacent periosteal attachment.

See also

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Article information

rID: 25883
Tag: stub, cases, refs
Synonyms or Alternate Spellings:
  • POLPSA lesions
  • Posterior labrocapsular periosteal sleeve avulsion
  • POLPSA lesion

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Cases and figures

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