MRI Shoulder

Question 1

how does scapular dyskinesia affect the rotator cuff function?

Answer 1

causes the rotator cuff to no longer be able to compress the humeral head into the glenoid for stability

Question 2

in what condition does the scapula drop inferior, moves lateral from midline, abduct, and tilt, resulting in loss of scapular control?

Answer 2

sick scapula syndrome

Question 3

what secondary MRI finding can occur in sick scapula syndrome?

Answer 3

scapulothoracic bursitis

Question 4

how does excessive force on the posterior capsule start in the throwing athlete?

Answer 4

weakness in the scapula and the rotator cuff

Question 5

when a patient has sick scapula and continues throwing, what ligament starts to experience excessive stress?

Answer 5

posterior inferior glenohumeral ligament

Question 6

how many degrees of loss of internal rotation is present to diagnose GIRD?

Answer 6

20 degrees or more

Question 7

what condition is characterized by posterosuperior impingement / contact of the undersurface of the rotator cuff between the greater tuberosity and the glenoid / labrum?

Answer 7

internal impingement

Question 8

where does internal impingement occur anatomically?

Answer 8

the junction of the posterior supraspinatus and the anterior infraspinatus

Question 9

what condition precedes internal impingement of the shoulder in the throwing athlete?

Answer 9

GIRD