Glenohumeral joint

1. What is the labrum? What attaches at the labrum?
2. What is the purpose of the glenohumeral ligaments?
3. What are the three glenohumeral ligaments?
4. What are the muscles that surround the humeral head and provide dynamic stabilization?

Answers:
1. The labrum is a fibrocartilaginous fold of capsular tissue that surrounds the glenoid fossa, increasing contact between the humeral head and the glenoid. The labrum is where the glenohumeral ligaments and tendons attach and prevents humeral head dislocation.
2. To provide stability and keep the head of the humerus in the glenoid fossa.
3. Superior, middle, and inferior ligaments.
4. Rotator cuff muscles (SITS), long head of biceps tendon, deltoid, teres major.