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Kinesiology > Chapter 11 (Elbow Joint) > Flashcards

Chapter 11 (Elbow Joint) Flashcards

1
Q

The elbow joint consists of what bones?

A

humerus, ulna, radius

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2
Q

Normal ROM in flexion of elbow joint is

A

145 degrees

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3
Q

T/F

Radius is on the thumb side of hand

A

True

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4
Q

T/F

Ulna is on the pinky side of hand

A

True

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5
Q

Normal ROM in extension of elbow is

A

0 degrees

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6
Q

what are the 4 elbow joints?

A
  1. Humeroulnar joint
  2. humeroradial joint
  3. superior or proximal radioulnar joint
  4. inferior or distal radioulnar joint
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7
Q

Humeroulnar joint and humeroradial

A

uniaxial hinge joint
ROM 0-145
moves in sagittal plane

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8
Q

superior or proximal radioulnar joint and Inferior or distal radioulnar joint

A
  • uniaxial pivot joint
  • moves in transverse plane
  • motions are supination ROM 90 degrees
  • pronation ROM 80 degrees
  • radius rotates around ulna
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9
Q

Can the ulna rotate?

A

The radius moves around the ulna, The ulna does not rotate at all it is locked in place.

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10
Q

What is carrying angle?

A
  • longitudinal axes of humerus and forearm form an angle.
  • Greater in woman 10-15 degrees
  • men 5 degrees
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11
Q

What are the bony landmarks on scapula that move the elbow joint

A
  • supraglenoid tubercle- (above) attaches long head of bicep
  • Infraglenoid tubercle -(below) attaches long head triceps
  • Coracoid process- attaches short head bicep
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12
Q

What are the bony land marks of humerus?

A
  • trochlea -capitulum
  • medial epicondyle -lateral epicondyle
  • olecranon process
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13
Q

Describe the trochlea

A
  • medial side articulates with ulna

- sits inside end of ulna “scoop part”

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14
Q

Describe the capitulum

A

lateral side articulates with radial head

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15
Q

Describe the medial epicondyle

A

pronator teres attachment

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16
Q

Attachment for Anconeus and supinator

A

Lateral epicondyle

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17
Q

This part of humerus articulates with olecranon process

A

olecranon fossa

18
Q

What are the bony land marks of ulna?

A
  • olecranon process -trochlear
  • coronoid process -radial notch
  • ulnar tuberosity -styloid process
19
Q

Olecranon process

A

Tricep attachment

20
Q

What does the trochlear articulate with?

21
Q

Coronoid process

A

Brachialis attachment (point on scoop part of ulna)

22
Q

This part of ulna articulates with radial head

A

Radial notch

23
Q

Ulnar tuberosity

A
  • brachialis attachment

- Bump serves for muscle attachment

24
Q

Styloid process of ulna *

A

distal end, medially

25
Q

What are the bony landmarks of radius?

A
  1. Head - articulates with capitulum on humerus
  2. Radial tuberosity - bicep attachment
  3. Styloid process - brachioradialis attachment at distal end
26
Q

This keeps radius and ulnar together and serves as muscle attachment

A

Interosseous membrane

27
Q

What are the muscles of the elbow and forearm?

A
  • brachialis -brachioradialis
  • biceps -supinator
  • triceps -Anconeus
  • Pronator teres -pronator quadratus
28
Q

What is the origin, insertion and action of the brachialis muscle?

A

O: humerus
I: ulna
A: Elbow flexion

29
Q

What is the origin, insertion and action of the biceps brachii muscle?

A

2 origins 1 insertion*
O: Scapula (long/short head)
I:Radius (radial tuberosity)
A: shoulder flexion, elbow flexion, forearm supination

-two joint muscle
Active insufficiency shoulder flexion with elbow flexion

30
Q

What is the origin, insertion and action of the brachioradialis muscle?

A

O: humerus
I: styloid process of radius
A: elbow flexion

31
Q

What is the origin, insertion and action of the triceps brachii muscle?

A

* 3 origins, 1 insertion**
O: scapula, humerus (2 parts)
I: Ulna
A: elbow extension

  • Two joint muscle
  • Active insufficiency in full shoulder extension and elbow extension
32
Q

What is the origin, insertion and action of the anconeus muscle?

A

O: lateral epicondyle of humerus
I: Ulna
A: not a prime mover in any joint action
**stabilizer in pronation/supination

33
Q

What is the origin, insertion and action of the Pronator teres muscle?

A

O: medial epicondyle humerus, ulna
I: radius
A: pronation; assists in elbow flexion

34
Q

What is the origin, insertion and action of the pronator muscles?

A

O: ulna
I: radius
A: forearm pronation

35
Q

What is the origin, insertion and action of thesupinator muscle?

A

O: lateral epicondyle of humerus
I: radius
A: forearm supination

36
Q

What is a force couple to move the radius?

A
  • The supinator and bicep muscles work together to move the radius around the ulna.
  • ANd move radius in forearm supination
37
Q

What are some elbow flexors?

A
  • Brachialis -Brachioradialis

- Biceps Brachii - Wrist flexors

38
Q

What are some elbow extensors?

A
  • Triceps - Anconeus

- Wrist extensors

39
Q

What are some supinators?

A
  • Bicep Brachii

- Supinator

40
Q

What are some pronator muscles?

A
  • Pronator teres

- Pronator quadratus

Kinesiology (10 decks)

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