Posterosuperior segment of glenoid labrum

For descriptive purposes of labral injuries, the glenoid labrum can be subdivided in different segments by two methods:

Clock face assignment: labral position is localized by superimposing the face of a clock onto the surface of the glenoid. By convention, 12 o’clock is superior, 3 o’clock is anterior, 6 o’clock is inferior, and 9 o’clock is posterior.

6 segments of the glenoid labrum:

• Superior segment of glenoid labrum

• Anterosuperior segment of glenoid labrum

• Posterosuperior segment of glenoid labrum

• Inferior segment of glenoid labrum

• Anteroinferior segment of glenoid labrum

• Posteroinferior segment of glenoid labrum

Note that these 6 segments do not overlap the four quadrants classification of the glenoid surface.