Sublabral foramen

A sublabral foramen or hole is simply separation of the labrum from the underlying glenoid. It is a labral variant of no clinical significance and can be confused with a SLAP lesion

Sublabral foramen are located anterosuperiorly and can extend down to but not below the 3 o'clock position, which divides the anterior labrum into superior and inferior halves. 

Differential diagnosis

Unlike a SLAP lesion (and enabling distinction between the two) it does not extend posteriorly past the insertion of the long head of biceps brachii tendon.

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Upper limb anatomy

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