Shoulder Part 1: Exam 3 Flashcards

1
Q

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

A
  • rotator cuff muscles
  • joint capsule
  • scapula stabilizing muscles
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2
Q

Bones of the shoulder complex

A
  • clavicle
  • scapula
  • humerus
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3
Q

Joints of the shoulder complex

A
  • sternoclavicular
  • acromioclavicular
  • glenohumeral
  • scapulothoracic
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4
Q

Ligaments of the shoulder complex

A
  • sternoclavicular
  • acromioclavicular
  • coracoclavicular
  • glenohumeral
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5
Q

SC joint

A

Sternoclavicular

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6
Q

SC joint articulation

A

Clavical articulates with manubrium of the sternum

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7
Q

What is between the articulating surfaces?

A

Fibrocartilaginous disk

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8
Q

Fibrocartilaginous disk

A
  • shock absorber and helps prevent displacement

- clavicle permitted to move up and down, forward and backwards and in rotation

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9
Q

AC joint

A

Acromioclavicular joint

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10
Q

AC join location

A

Lateral end of the clavicle

-acromion process of scapula meets lateral end of clavicle

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11
Q

AC joint injuries

A

Weak joint and susceptible to sprain and separation

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12
Q

GH joint

A

Glenohumeral

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13
Q

What type of joint is the GH joint?

A

Ball and socket joint

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14
Q

GH joint location

A

Round head of humerus articulates with shallow glenoid fossa of scapula

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15
Q

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

A

Glenoid labrum

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16
Q

What statically stabilizes the GH joint?

A

Labrum and capsular ligaments

17
Q

What dynamically stabilizes the GH joint?

A

Deltoid and rotator cuff muscles

18
Q

ST joint

A

Scapulothoracic joint

19
Q

What is not a real joint?

A

ST joint

20
Q

What is critical to joint motion?

A

Movement of scapula on thoracic cage

21
Q

Scapulohumeral rhythm

A

During humeral elevation scapula and humerus must move in synchronous fashion

22
Q

Shoulder muscles (5)

A
  • rotator cuff
  • deltoids
  • pectoralis major
  • biceps
  • triceps
23
Q

Rotator cuff function

A

Provides most of the dynamic stability of the GH joint

24
Q

4 muscles of the rotator cuff

A
  • supraspinatus
  • infraspinatus
  • teres minor
  • subscapularis
25
Q

Pectoralis major location

A

Originates on the sternum and clavicle and inserts on biceps

26
Q

Pectoralis major functions

A

Shoulder flexion/ extension, adduction, internal rotation

27
Q

Biceps location

A

Anterior surface of upper arm

28
Q

Function of bicep

A

Elbow flexion and assists in shoulder flexion

29
Q

Triceps location

A

Posterior surface of upper arm

30
Q

Function of triceps

A

Elbow extension and assists in shoulder extension

31
Q

What causes many specific shoulder injuries

A

Instability

32
Q

What provides static stability?

A

Bony/labral and ligamentous anatomy

33
Q

What provides dynamic stability?

A

Muscles

34
Q

Important to observation of shoulder complex

A
  • elevation or depression of shoulder tips
  • position and shape of clavicle
  • scapulohumeral rhythm
35
Q

Important bony palpation of shoulder complex

A
  • SC joint
  • clavicle
  • AC joint
  • humeral head
  • spine of scapula
36
Q

Special tests for active and passive ROM

A
  • flexion
  • extension
  • abduction
  • adduction
  • internal rotation
  • external rotation
37
Q

Muscles to test

A

Muscles of the shoulder and those that serve as scapula stabilizers

38
Q

Joints to test for stability

A
  • SC
  • AC
  • GH