Shoulder Complex Ligaments

Question 1

Attachments of trapezoid ligament

Answer 1

Coracoid process to trapezoid line of clavicle

Question 2

Attachments of conoid ligament

Answer 2

Coracoid process to conoid tubercle of clavicle

Question 3

Attachments of acromioclavicular ligament

Answer 3

superior aspect of acromial end of the clavicle to adjacent acromion

Question 4

Attachments of coracoacromial ligament

Answer 4

lateral border of coracoid process to acromion adjacent to clavicular articulation

Question 5

Attachments of coracohumeral ligament

Answer 5

base of coracoid process to anterior aspect of greater tubercle

Question 6

Attachments of costoclavicular ligament

Answer 6

superior aspect of cartilage of first rib to undersurface of the clavicle

Question 7

Attachments of superior transverse scapular ligament

Answer 7

base of coracoid process to the medial edge of the scapular notch

Question 8

Attachments of glenoid capsule

Answer 8

circumference of glenoid cavity to anatomical neck of humerus

Question 9

Attachments of glenohumeral ligaments

Answer 9

upper part of medial margin of glenoid cavity to lesser tubercle & anatomical neck

Question 10

Function of coracoclavicular ligaments

Answer 10

stabilizes acromioclavicular joint limiting medial displacement
protraction and elevation of clavicle on the scapula

Question 11

Function of acromioclavicular ligament

Answer 11

stabilizes AC joint, resists superior motion of clavicle

Question 12

Function of coracoacromial ligament

Answer 12

prevents superior displacement of the humeral head by forming the coracoacromial arch

Question 13

Function of coracohumeral ligament

Answer 13

reinforces superoanterior aspects of glenohumeral joint capsule

Question 14

Function of costoclavicular ligament

Answer 14

stabilizes sternoclavicular joint, limiting elevation of clavicle

Question 15

Function of superior transverse scapular ligament

Answer 15

closes off the suprascapular notch

Question 16

Function of superior glenohumeral ligament

Answer 16

resists inferior glide of humerus on glenoid at 0 degrees of abduction

Question 17

Function of middle glenohumeral ligament

Answer 17

resists anterior glide of humerus on glenoid and limits external rotation with humerus at 45 degrees of abduction

Question 18

Function of inferior glenohumeral ligament complex

Answer 18

resists inferior glide of humerus on glenoid fossa
limits external rotation and internal rotation of humerus at 90 degrees of abduction