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Flashcards in Shoulder Joint Deck (23)
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1

Most important static stabilizers of the glenohumeral joint ?

capsule and its' associated ligaments

2

Most important dynamic stabilizers of the glenohumeral joint?

muscles of the rotator cuff

3

What are the rotator cuff muscles?

supraspinatus
infraspinatus
subscaularis
teres minor

4

What is the function and innervation of the supraspinatus?

Initiates and assist with abducting of the arm
suprascapular nerve

5

What is the function and innervation of the infraspinatus?

external rotation, abduction and adduction
suprascapular nerve

6

What is the function and innervation of the subscapularis?

internal rotation
upper and lower sub scapular nerve

7

What is the function and innervation of the teres minor?

external rotation and adduction
axillary nerve

8

Rotator cuff injury results from?

inflammation, tearing or impingement of the tendon of any rotator cuff muscle due to frequent overhead use or the normal process of aging

9

What is the muscle/tendon most often involved in rotator cuff injury?

supraspinatus muscle

10

What rotator cuff muscles connects anteriorly?

subscapularis

11

Important ligaments of the glenohumeral joint.

glenoid labrum and glenohumeral ligaments associated with the outer aspect of the capsule

12

glenoid labrum

fibrocartilaginous right that deepens the glenoid fossa

13

Ligaments that support the AC joint

acromioclavicular ligament and coracoclavicular ligament

14

Coracocromial ligament

creates an arch over the top of the glenohumeral joint and a space through which the supraspinatus tendon passes

15

What is the ligament that can contribute to impingement of the suprasinatus tendon leading to rotator cuff problems?

coracoacromial ligament

16

What is a shoulder dislocation?

disarticulation of the head of the humerus from the glenoid

17

In most cases of shoulder dislocation where does the head of the humerus move?

anteriorly and inferiorly relative to the glenoid

18

What is shoulder separation?

disarticulation of the clavicle and acromion at the AC joint

19

Grade I Separation

slight displacement of the joint, acominoclavicular ligament may be stretched or partially torn

20

What is the most common type of injury at the AC joint?

grade I separation

21

Grade II Separation

partial dislocation fo the joint in which there may be some displacement that may not be obvious during a physical exam. Acromioclaviclar ligament is complete torn, while the coracoclavicular ligaments remain intact.

22

Grade III Separation

complete separation of the joint. acromioclavicular ligament, coracoclavicular ligament, and the capsule surrounding the joint are torn. Usually the displacement is obvious on clinical exam.

23

What happens to the shoulder with there is no ligament support?

the should falls under the weight of the arm and the clavicle is pushed up causing an obvious bump on the top of the shoulder