Which ligament acts as a stabilizer for the long head of the biceps brachii and contributes to the structural integrity of the GH joint?

The coracohumeral ligament plays a significant role in stabilizing the long head of the biceps brachii tendon as it traverses the shoulder joint. This ligament extends from the coracoid process of the scapula to the greater tubercle of the humerus, providing support and preventing the displacement of the long head tendon from its shallow groove on the humeral head. By maintaining the position of the tendon within the bicipital groove, the coracohumeral ligament aids in the overall structural integrity of the glenohumeral (GH) joint, which is essential for shoulder stability and function.

In contrast, other ligaments in the shoulder joint have different roles. The transverse humeral ligament, while it does help to hold the long head of the biceps in the bicipital groove, does not provide the same level of stability or structural support as the coracohumeral ligament. The glenohumeral ligaments contribute mainly to the stabilization of the joint capsule but do not specifically target the biceps tendon. The scapular ligament does not play a direct role in the stabilization of the long head of the biceps or the GH joint. Thus, the coracohumeral ligament is the