Citation, DOI, disclosures and article data
Citation:
Venkatesh M, Knipe H, Weerakkody Y, et al. Posterior labrocapsular periosteal sleeve avulsion lesion. Reference article, Radiopaedia.org (Accessed on 18 Mar 2025) https://doi.org/10.53347/rID-25883
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.
Epidemiology
Associations
Pathology
Mechanism
Impingement of the humeral head onto the posterior labrum and capsule due to recurrent subluxation or posterior dislocation.
Radiographic features
MRI
May show fluid extending between the posterior labrum and the glenoid, with stripping of the subjacent periosteal attachment.
See also
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1. Shah N, Tung GA. Imaging signs of posterior glenohumeral instability. AJR Am J Roentgenol. 2009;192 (3): 730-5. doi:10.2214/AJR.07.3849 - Pubmed citation
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2. Yu JS, Ashman CJ, Jones G. The POLPSA lesion: MR imaging findings with arthroscopic correlation in patients with posterior instability. Skeletal Radiol. 2002;31 (7): 396-9. doi:10.1007/s00256-002-0513-0 - Pubmed citation
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3. De Coninck T, Ngai SS, Tafur M, Chung CB. Imaging the Glenoid Labrum and Labral Tears. (2016) Radiographics : a review publication of the Radiological Society of North America, Inc. 36 (6): 1628-1647. doi:10.1148/rg.2016160020 - Pubmed
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