Upper Extremity Joints

Question 1

Osteokinematic Motions of the Glenohumeral Joint?

Answer 1

Flexion/extension

Ab/adduction

ER/IR

Question 2

Loose Pack Position of the Glenohumeral Joint?

Answer 2

55 degrees abduction, 30 degrees horizontal adduction

Question 3

Closed Pack Position of the Glenohumeral joint?

Answer 3

Abduction + ER

Question 4

Capsular pattern of the Glenohumeral Joint?

Answer 4

ER >Abduction > IR

Question 5

What type of joint is the glenohumeral joint?

Answer 5

Synovial —ball and socket

Question 6

Osteokinematic Motions of the sternoclavicular joint

Answer 6

Elevation/depression

Protraction/Retraction

ER/IR

Question 7

Loose pack position of the sternoclavicular joint?

Answer 7

Arm resting by the side

Question 8

Closed back position of the arm?

Answer 8

Maximum shoulder elevation

Question 9

Capsular pattern of sternoclavicular joint?

Answer 9

Pain at extremes of ROM

Question 10

Osteokinematic motion of the acromioclavicular joint?

Answer 10

Anterior/Posterior Tilting

Upward/downward rotation

Protraction/Retraction

Question 11

Loose pack position of the acromioclavicular joint?

Answer 11

Arm resting by the side

Question 12

Closed pack position of the acromioclavicular joint?

Answer 12

Arm abducted to 90 degrees

Question 13

Capsular pattern of the acromioclavicular joint?

Answer 13

Pain at the extremes of ROM

Question 14

Purpose of Acromioclavicular ligaments

Answer 14

Control horizontal movements of the clavicle

Question 15

Where does the coracoacromial Ligament attach?

Answer 15

Attaches b/t the coracoid process + acromion

Forms a “roof” over the humeral head

Question 16

What is the purpose of the coracoacromial ligament?

Answer 16

Limits superior translation of the humeral head + prevents separation of the AC joint

Question 17

Where does the Coracoclavicular ligament attach?

Answer 17

Attaches b/t the coracoid process and the clavicle + consists of two different ligaments: Conoid + Trapezoid

Question 18

What is the purpose of the coracoclavicular ligament?

Answer 18

Acts as the primary support of the AC jt + limits translation of the humeral head

Question 19

Coracohumeral ligament attaches where?

Answer 19

Attaches proximally to the coracoid process and splits distally to attach to the greater and lesser tuberosities

Question 20

What is the purpose of the Coracohumeral ligament?

Answer 20

The ligament is found b/t and helps to unite the supraspinatus and subscapularis tendons.

Limits inferior translation of the humeral head

Question 21

Costoclavicular ligament attaches where?

Answer 21

Between the medial portion of the clavicle and the 1st rib

Question 22

What is the purpose of the Costoclavicular ligament?

Answer 22

Primary supporting ligament for the SC joint

Question 23

Name the Glenohumeral ligaments.

Answer 23

1. Superior
2. Middle
3. Inferior

Question 24

What does the superior Glenohumeral Ligament limit?

Answer 24

Limits adduction of the shoulder + Er with the shoulder in 0-45 degrees of abduction.

Question 25

What does the middle Glenohumeral Ligament limit?

Answer 25

limits ER with the shoulder in 45-90 degrees of abduction

Question 26

What does the inferior glenohumeral ligament limit?

Answer 26

Inferior GH ligament has an anterior and posterior band that limits ER + IR above 90 degrees of abduction

B/t the two bands is an axillary pouch that limits inferior translation when the shoulder is above 90 degrees

Question 27

What is the purpose of the Glenoid Labrum?

Answer 27

Fibrocartilaginous stricter that deepens the glenoid fossa + increases the size of the articular surface

• Often damaged with recurrent shoulder instability

Question 28

What is a the joint capsule of the GH joint?

Answer 28

Arises from the glenoid fossa and the glenoid labrum to blend w/ the muscles of the rotator cuff

Question 29

What much bigger is the GH joint capsule than the humeral head?

Answer 29

2x the size of the humeral head

Question 30

What reinforces the GH joint capsule?

Answer 30

The GH ligaments and the coracohumeral ligament

Question 31

What is the Rotator interval?

Answer 31

A space in the anterosuperior shoulder that consists of and is bordered by the coracohumeral ligament, the superior GH ligament, joint capsule, and supraspinatus + subscapularis tendons

Question 32

Where is the subacromial bursa located?

Answer 32

Extends over the supraspinatus tendon and distal muscle belly, beneath the acromion and deltoid muscle

Question 33

What is the purpose of the subacromial bursa?

Answer 33

Facilities movement of the Deltoid muscle over the fibrous capsule of the shoulder joint and supraspinatus tendon

Question 34

What is the subacromial bursa typically involved in?

Answer 34

Impingement beneath the acromial arch

Question 35

Where is the subscapular bursa located?

Answer 35

Overlies the anterior jt capsule + lies beneath the subscapularis muscle

Question 36

Anterior Shoulder fullness may indicate articular effusion secondary to distinction of the ___________.

Answer 36

Subscapular bursa

Question 37

Transverse humeral ligament attaches to?

Answer 37

Attaches b/t the greater + lesser tubercles of the humerus, spanning over the bicipital groove

Question 38

What is the purpose of the transverse humeral ligament?

Answer 38

Maintains the tendon of the long head of the biceps writhing the bicipital groove