Shoulder and Elbow Clinical Flashcards Preview

Systems: MSK AB > Shoulder and Elbow Clinical > Flashcards

Flashcards in Shoulder and Elbow Clinical Deck (36)
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1

What muscles attach to the greater tuberosity of the humerus?

-Supraspinatous
-Infraspinatous
-Teres minor

2

How is the head of the humerus rotated?

Retroverted 30 degrees

3

What muscle attaches to the lesser tuberosity of the humerus?

Subscapularis

4

What are the function of the clavicle?

-Strut to support the shoulder
-Protects the brachial plexus and vessels
-Attachment for muscles

5

What muscles attach to the clavicle?

-Trapezius
-Deltoid
-Pectoralis major
-Subclavius
-Sternocleidomastoid
-Sternohyoid

6

Name the ligaments of the clavicle.

-Acromico-clavicular ligament
-Coraco-acromical ligament
-Coraco-clavicular ligament

7

What is the role of the inferior glenohumeral ligament?

Primary static constraint abduction>45

8

What is the role of the middle glenohumeral ligament?

Mid range with subscapularis, minor role in assisting IGHL

9

What is the labrum?

-Fibrocartilage
-It elevates the glenoid edge
-Doubles the glenoid depth and increases the surface area
-Acts as a chock block limiting glenohumeral translation

10

Where is the axillary nerve at most risk?

Surgical neck of the humerus

11

How can the axillary nerve be injured/

-Shoulder dislocation
-Fracture of surgical neck of the humerus

12

What does axillary nerve damage lead to?

-Weakness of deltoid
-Sensory loss in badge area

13

What is the role of the rotator cuff muscles?

-Blend with the capsule to protect and give stability
-Hold the head of the humerus against the glenoid cavity during shoulder movements

14

What can rotator cuff tear injure?

-Brachial plexus
-Axillary nerve
-Subscapular nerve
-Musculocutaneous nerve
-Humeral circumflex artery

15

What do the rotator cuff muscles integrate the motion of?

-Sternoclavicular joint
-Acromioclavicular joint
-Glenohumeral joint
-Scapulothoracic articulation

16

What contributes to the adduction of the shoulder?

-0 to 30 degrees elevation greater motion at glenohumeral joint -Last 60 degrees of elevation there is equal contribution of glenohumeral and scapulothoracic articulation
-Overall 2:1 ratio between glenohumeral and scapulothoracic

17

What muscles are involved in flexion of the shoulder?

-Pectoralis major
-Coracobrachialis
-Biceps
-Deltoid (anterior)

18

What muscles are involved in extension of the shoulder?

-Teres major
-Latissmus dorsi
-Deltoid (posterior)

19

What muscles are involved in abduction of the shoulder?

-Deltoid (middle)
-Supraspinatous

20

What muscles are involved in adduction of the shoulder?

-Pectoralis major
-Latissimus dorsi

21

What muscles are involved in medial rotation of the shoulder?

-Teres major
-Subscapularis

22

What muscle are involved in lateral rotation of the shoulder?

-Teres minor
-Infraspinatous

23

What bones are involved in the elbow joint?

-Humerus
-Ulna
-Radius

24

What are the 2 articulations of the elbow joint?

-Humeroulnar
-Humeroradial

25

Where does the ulnar collateral ligament run?

Medial epicondyle to cornoid process and olecranon

26

Where does the radial collateral ligament run?

Extends from lateral epicondyle of humerus and blends with annular ligament

27

What movements occur at the elbow?

Uniaxial so only flexion and extension

28

What muscles flex the elbow?

-Brachialis
-Biceps brachii
-Brachioradialis

29

What muscles extend the elbow?

-Triceps
-Anconeus

Gravity also plays a role

30

What types of joints are the radioulnar joints?

-Superior and inferior: uniaxial synovial pivot joints
-Middle: syndesmosis (fibrous joint)