[Classification of normal labral variants and labral injuries]

Area of Science:

• Orthopedics
• Radiology
• Anatomy

Background:

• The glenoid labrum is vital for glenohumeral joint stability.
• Labral injuries significantly impact shoulder joint stability.
• Complex anatomy necessitates detailed knowledge of variants and injury patterns.

Purpose of the Study:

• To review MR arthrographic findings of normal glenoid labrum variants.
• To outline various glenoid labral injury patterns.
• To emphasize the importance of high-resolution imaging for accurate diagnosis.

Main Methods:

• Review of magnetic resonance (MR) arthrography findings.
• Discussion of normal anatomical variations of the glenoid labrum.
• Classification of different labral injury patterns.

Main Results:

• MR arthrography effectively visualizes glenoid labrum anatomy.
• Distinct imaging features differentiate normal variants from pathological labral tears.
• Understanding variations is key to interpreting injury patterns.

Conclusions:

• Accurate diagnosis of labral injuries requires expertise in glenoid labrum anatomy.
• MR arthrography is the preferred imaging modality for evaluating labral pathology.
• Distinguishing variants from injuries is essential for appropriate patient management.