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Fig. 2. —Drawings show normal glenoid and labrum and mild, moderate, and severe glenoid dysplasia. For normal glenoid and labrum, posterior glenoid is characterized by pointed posteroinferior glenoid rim with normal-appearing posterior labral tissue. Note symmetry of posterior glenoid with anterior glenoid. In cases of mild glenoid dysplasia, mild rounding or truncation of posteroinferior glenoid rim is seen on one or two sections cephalad to most caudal section. Posterior labrum is normal in appearance or slightly thickened inferiorly. In cases of moderate glenoid dysplasia, rounding-off and truncation of posteroinferior glenoid rim are more marked, often with posterior tilt or sloping of glenoid articular surface. This is associated with abnormally thickened, low-signal soft tissue adjacent to, or replacing, deficient portion of posterior glenoid rim. In severe cases of glenoid dysplasia, rounding, truncation, and posterior sloping of glenoid are extreme. This is associated with abnormally thickened, low-signal posterior soft tissues adjacent to, or replacing, deficient portion of posterior glenoid rim.