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Glenoid Labrum
Connective Tissue

Glenoid Labrum

Labrum glenoideum

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Anatomical Relations

The glenoid labrum, as the name suggests, forms a lip around the shallow glenoid fossa (or glenoid cavity). Its attachment to the glenoid fossa is strengthened superiorly where it blends with the fasciculi of the tendon of the long head of biceps brachii muscle. The articular capsule of the glenohumeral joint attaches to the glenoid labrum.

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The glenoid labrum is a fibrocartilaginous structure and can vary in thickness and size. In some instances, the anterior part of the labrum may be absent (<20%).


The glenoid labrum forms a rim around the glenoid fossa, thus, deepening the cavity (i.e., forming a socket for the head of the humerus). Therefore, it may assist in stabilizing the humeral head as it sits in the glenoid fossa.

List of clinical correlates

—Glenoid labrum tear

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Glenoid Labrum

ScienceDirect image

The glenoid labrum, the glenohumeral ligaments, and the muscles of the rotator cuff all contribute to stability.

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