Shoulder Part 1: Exam 3 Flashcards Preview

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Flashcards in Shoulder Part 1: Exam 3 Deck (38):
1

Movement and stablization of the shoulder requires integrated function of what?

-rotator cuff muscles
-joint capsule
-scapula stabilizing muscles

2

Bones of the shoulder complex

-clavicle
-scapula
-humerus

3

Joints of the shoulder complex

-sternoclavicular
-acromioclavicular
-glenohumeral
-scapulothoracic

4

Ligaments of the shoulder complex

-sternoclavicular
-acromioclavicular
-coracoclavicular
-glenohumeral

5

SC joint

Sternoclavicular

6

SC joint articulation

Clavical articulates with manubrium of the sternum

7

What is between the articulating surfaces?

Fibrocartilaginous disk

8

Fibrocartilaginous disk

-shock absorber and helps prevent displacement
-clavicle permitted to move up and down, forward and backwards and in rotation

9

AC joint

Acromioclavicular joint

10

AC join location

Lateral end of the clavicle
-acromion process of scapula meets lateral end of clavicle

11

AC joint injuries

Weak joint and susceptible to sprain and separation

12

GH joint

Glenohumeral

13

What type of joint is the GH joint?

Ball and socket joint

14

GH joint location

Round head of humerus articulates with shallow glenoid fossa of scapula

15

What helps to widen and deepen the articulation of humerus and scapula?

Glenoid labrum

16

What statically stabilizes the GH joint?

Labrum and capsular ligaments

17

What dynamically stabilizes the GH joint?

Deltoid and rotator cuff muscles

18

ST joint

Scapulothoracic joint

19

What is not a real joint?

ST joint

20

What is critical to joint motion?

Movement of scapula on thoracic cage

21

Scapulohumeral rhythm

During humeral elevation scapula and humerus must move in synchronous fashion

22

Shoulder muscles (5)

-rotator cuff
-deltoids
-pectoralis major
-biceps
-triceps

23

Rotator cuff function

Provides most of the dynamic stability of the GH joint

24

4 muscles of the rotator cuff

-supraspinatus
-infraspinatus
-teres minor
-subscapularis

25

Pectoralis major location

Originates on the sternum and clavicle and inserts on biceps

26

Pectoralis major functions

Shoulder flexion/ extension, adduction, internal rotation

27

Biceps location

Anterior surface of upper arm

28

Function of bicep

Elbow flexion and assists in shoulder flexion

29

Triceps location

Posterior surface of upper arm

30

Function of triceps

Elbow extension and assists in shoulder extension

31

What causes many specific shoulder injuries

Instability

32

What provides static stability?

Bony/labral and ligamentous anatomy

33

What provides dynamic stability?

Muscles

34

Important to observation of shoulder complex

-elevation or depression of shoulder tips
-position and shape of clavicle
-scapulohumeral rhythm

35

Important bony palpation of shoulder complex

-SC joint
-clavicle
-AC joint
-humeral head
-spine of scapula

36

Special tests for active and passive ROM

-flexion
-extension
-abduction
-adduction
-internal rotation
-external rotation

37

Muscles to test

Muscles of the shoulder and those that serve as scapula stabilizers

38

Joints to test for stability

-SC
-AC
-GH