POLPSA 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.

Epidemiology

Associations

• Bennett lesion is associated according to some authors .

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

• reverse Bankart lesion

Siehe auch:

• hintere Schulterluxation
• posterior glenohumeral instability

und weiter:

• glenohumerale Instabilität