Shoulder Lecture

Question 1

Conoid Ligament

Answer 1

(A)

Runs vertically between Coracoid Process and Clavicle

Resists elevation and protraction

Question 2

Trapezoid Ligament

Answer 2

(C)

Runs in a superior and lateral direction between the Coracoid Process and Clavicle

Provides AC Joint compression

Question 3

Which Ligaments are grouped together as the Costoclavicular Ligaments?

Answer 3

Conoid and Trapezoid Ligaments

Question 4

What are the Costoclavicular Ligaments doing during clavicular elevation?

Answer 4

Both develop tension that results in a posterior rotation of the Clavicle along its long axis + resist upward rotated forces of the scapula

Question 5

Acromioclavicular Ligament

Answer 5

(B)

Runs horizontally from Acromion to the Clavicle

Covers joint capsule and reinforces its superior aspect

Question 6

Describe the articulating surfaces of the AC Joint.

Answer 6

Medial Acromion - flat / surface faces superior, anterior, and medial

Lateral Clavicle - flat / surface faces interior, posterior, and lateral

Articular disk lies between the bones to help improve congruency and stability

Question 7

Which ligaments provide support to the SC Joint capsule?

Answer 7

Anterior and Posterior Sternoclavicular Ligaments

Question 8

Interclavicular Ligament

Answer 8

Spans between medial ends of Clavicles

Provides restraint to inferior forces on the medial end of the clavicle - prevents it from coming down towards 1st rib