The size of this recess is variable, and has been classified into various types by different authors. One scheme divides the sublabral recess into 3 types. In a type 1 attachment, the labral-bicipital complex is firmly attached to the glenoid rim and an arthroscopic probe cannot be inserted between the labrum and the glenoid. A type 2 attachment has a small sulcus between the labrum and the glenoid rim, while a type III attachment has a deep sulcus between the labrum and the glenoid rim that allows a probe to be inserted between the two.
The superior sublabral recess can be continuous with the sublabral foramen.
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