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Summary

Understanding shoulder labral variants is crucial for accurate diagnosis. Differentiating normal variants from tears prevents unnecessary surgeries and maintains shoulder mobility.

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Area of Science:

Orthopedics
Radiology
Anatomy

Background:

The shoulder joint's inherent instability is balanced by stabilizing structures, with the glenoid labrum playing a key role.
Glenoid labral lesions are often associated with shoulder instability, categorized as anterior, posterior, or superior.
Superior labral tears may present as microinstability due to the acromion blocking dislocation.

Purpose of the Study:

To review glenoid labral anatomy and normal variants.
To describe the imaging features of labral variants and tears.
To guide differentiation between normal variants and pathologic labral lesions.

Main Methods:

Review of anatomical and pathological features of the glenoid labrum.
Detailed description of imaging characteristics for variants and tears.
Discussion on distinguishing normal variants from labral tears.

Main Results:

The glenoid labrum has normal variants that can mimic tears on imaging.
Accurate identification of variants is essential to avoid misdiagnosis.
Specific imaging features aid in differentiating variants from anteroinferior, posteroinferior, and superior labral lesions.

Conclusions:

Knowledge of normal glenoid labral variants is critical for accurate radiological interpretation.
Misidentifying variants as tears can lead to unnecessary surgical intervention.
Distinguishing variants from tears ensures appropriate patient management and preserves shoulder function.