Glenohumeral Joint

Question 1

What are the 4 glenohumeral ligaments

Answer 1

Inferior, superior and middle glenohumeral ligaments and the coracohumeral ligament

Question 2

What 2 joint motions allows shoulder abduction

Answer 2

Glenohumeral and scapulothoracic

Question 3

Motion of shoulder abduction

Answer 3

2 degrees of GH motion for every 1 degree of scapulothoracic motion. (180 degrees of abduction = 120 degrees of GH and 60 degrees of scapulothoracic)

Question 4

Where is the scapular plane

Answer 4

30 degrees anterior to coronal plane

Question 5

What part of the labrum has the poorest blood supply

Answer 5

Anterior-superior labrum

Question 6

What part of the labrum anchors the biceps tendon

Answer 6

Superior labrum

Question 7

What part of the labrum anchors the IGHL

Answer 7

Anterior labrum

Question 8

What part of the labrum is affected in bankart lesion

Answer 8

Anterior labrum

Question 9

What part of the labrum is affected in a SLAP lesion

Answer 9

Superior labrum

Question 10

Which ligament prevents inferior dislocation

Answer 10

SGHL

Question 11

Which ligament prevents anterior dislocation

Answer 11

MGHL

Question 12

Which ligament prevents posterior dislocation

Answer 12

Coracohumeral ligament

Question 13

Which ligament stabilizes the shoulder above 90 degrees

Answer 13

IGHL

Question 14

What are the dynamic stabilizers

Answer 14

SITS, teres major, latissimus dorsi, deltoid, biceps tendon, trapezius, serratus anterior

Question 15

What are the static stabilizers

Answer 15

Capsule, ligaments, labrum, glenoid