ALPSAAnterior Labroligamentous Periosteal Sleeve Avulsion (lesion)
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The findings closely correlated with the previous study by Hiari AA et al, [19] in which classic bankart was found in 15, perthes in 2, ALPSA in 3 and GLAD in one patient amongst the total 28 patients.
POLPSA (posterior labral periosteal sleeve avulsion) lesions are similar to ALPSA lesions and are characterized by stripping of the periosteum attached to the posterior labrum as it is avulsed from the glenoid rim.
An ALPSA (anterior labral periosteal sleeve avulsion) is a Bankart variant, however, in this lesion the avulsed periosteum remains intact.