Superior Labrum

labrum glenoidale superius

The superior glenoid labrum provides the attachment for the long head of the biceps tendon and the superior glenohumeral ligament, forming the superior rim of the glenoid socket.

Region: Shoulder

Biomechanics

Function & Actions

Anchors the biceps long head tendon to the supraglenoid tubercle, provides superior socket deepening, and is the structure involved in SLAP (superior labrum anterior-posterior) tears.

Clinical Relevance

Clinical Notes

SLAP tears of the superior labrum are classified I-IV by the Snyder classification. Type II (superior labral avulsion with biceps anchor detachment) is the most clinically significant, producing biceps anchor pain and shoulder symptoms in overhead athletes. The O'Brien test, Speed test, and compression-rotation test assess this structure.

Pathology

Common Injuries & Conditions

SLAP Type II Tear — Biceps Anchor Avulsion

Superior labral detachment with biceps anchor displacement producing shoulder pain on overhead activity, managed by SLAP repair or biceps tenodesis depending on patient age and activity level.

SLAP Lesion Mimicking Rotator Cuff Pain

Superior labral pathology producing anterosuperior shoulder pain that mimics supraspinatus impingement, distinguished by specific clinical tests and MR arthrography.