The superior glenohumeral ligament is the smallest of the three glenohumeral ligaments, contributing to inferior and posterior glenohumeral stability in the adducted position. It works with the coracohumeral ligament to stabilise the rotator interval and prevent inferior subluxation during dependent arm loading.
| Origin | Superior glenoid labrum adjacent to the biceps anchor |
|---|---|
| Insertion | Lesser tubercle and superior humeral neck |
| Actions | Restrains inferior translation and external rotation of the arm in the adducted position |
|---|
SGHL disruption contributes to inferior shoulder instability (sulcus sign) and is repaired during rotator interval closure procedures in shoulder stabilisation surgery.
SGHL and CHL disruption producing a positive sulcus sign, managed with rotator interval closure during shoulder stabilisation.
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