Primary Shoulder Structures

Question 1

Acromioclavicular Ligaments

Answer 1

Control horizontal movements of clavicle

Question 2

Coracoacromial Ligament

Answer 2

Limits superior translation of humeral head.

Prevents separation of the AC joint.

Question 3

Coracoclavicular Ligament

Answer 3

Primary support of AC joint.
Limits inferior translation of humeral head.
Made of conoid and trapezoid ligaments.

Question 4

Coracohumeral ligament

Answer 4

Unite supraspinatus and subscapularis tendon.

Limits inferior translation of humeral head.

Question 5

Costoclavicular Ligament

Answer 5

Primary supporting ligament for sternoclavicular joint.

Question 6

Glenohumeral Ligaments

Answer 6

Consists of Superior, Middle, and Inferior ligaments.

Superior limits Adduction and Lateral Rotation in 45 degrees of abduction.

Middle limits Lateral Rotation in 45-90 of abduction.

Inferior has posterior and anterior band that limits medial and lateral rotation respectively, above 90 of abduction.
-Between the bands is in axillary pouch that limits inferior translation when shoulder is above 90 abduction.

Question 7

Transverse Humeral Ligament

Answer 7

Spans between greater and lesser tubercles, helps to maintain long head of biceps in bicipital groove.