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KIN245 > Test 3: Elbow and Forearm > Flashcards

Test 3: Elbow and Forearm Flashcards

1
Q

Elbow movements:

A

Flexion & extension

Supination & pronation

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2
Q

Uniaxial articulation (direction of one movement)
Articular surfaces allow motion in only one plane
Motions- flexion and extension

A

Ginglymus (hinge) joint

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3
Q

What are examples of a hinge joint in elbow?

A

ex. humeroulnar joint, humeroradial joint

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4
Q

Also uniaxial articulation
Motions
• Rotation, supination, pronation

A

Trochodial (pivot, screw joint)

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5
Q

Example of trochoidal joint

A

Proximal & distal radio-ulnar joints

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6
Q

Widest part of elbow

A

Epicondyles

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7
Q

Normal ROM for radioulnar (forearm) movements

A

Pronation/supination 70°/85°

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8
Q

Normal ROM Humeroulnar & Humeroradial Movments

A

Normal ROM
• 0° - 145°

(biceps get in the way)

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9
Q

Annular l. of radius

A

starts on radius, wraps around ulna, connects back to radius.

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10
Q

Ulnar collateral l. is usually associated with what sport position and what surgery?

A

Baseball pitchers

Tommy John’s Surgery

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11
Q

Ligament that resists varus stress

A

Radial collateral

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12
Q

Ligament that stabilizes the proximal

radius during supination and pronation

A

Annular ligament

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13
Q

Origin of Biceps Brachii

A 
Long head
• Supraglenoid tubercle of
scapula, labrum
Short head
• Coracoid process of the scapula
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14
Q

Insertion of bicep brachii

A

Tuberosity of the radius and
aponeurosis of the biceps
brachii

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15
Q

Action of biceps brachii

A

Flex the elbow
Supinate the forearm
Flex the shoulder
(something important about long head)

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16
Q

Origin of brachialis

A

Distal half of anterior surface of humerus

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17
Q

Insertion of brachialis

A

Tuberosity and coronoid

process of ulna

18
Q

Action of brachialis

A

Flex the elbow

19
Q

Location of brachialis

A

Deep to bicep brachii

20
Q

Origin of brachioradialis

A

Proximal ⅔ of lateral
supracondylar ridge of
humerus (just remember lateral supracondylar ridge)

21
Q

Insertion of brachioradialis

A

Styloid process of radius

22
Q

Action of brachioradialis

A 
Flex the elbow
Assist to pronate and
supinate the forearm when
these movements are
resisted
(not primary mover, assister)
23
Q

Origin of the Triceps Brachii

A 
Long head
• Infraglenoid tubercle of the
scapula
Lateral head
• Posterior surface of proximal ½ of humerus
Medial head
• Posterior surface of distal half
of the humerus
24
Q

Insertion of triceps brachii

A

Olecranon process of the ulna

25
Q

Action of the triceps brachii

A 
All heads
• Extend the elbow
Long head
• Extend the shoulder
• Adduct the shoulder
26
Q

`Origin of the pronator teres

A

Common flexor tendon from

medial epicondyle of humerus and coronoid process of the ulna

27
Q

Insertion of the pronator teres

A

• Middle of lateral surface of the radius

28
Q

Action of the pronator teres

A
  • Pronate the forearm

* Assist to flex the elbow

29
Q

Origin of the Supinator

A 
• Lateral epicondyle of
humerus
• Radial collateral ligament
• Annular ligament
• Supinator crest of the ulna
30
Q

Insertion of the supinator

A

• Anterior, lateral surface of

proximal ⅓ of radial shaft

31
Q

Action of supinator

A

Supinate the forearm

32
Q

Origin of the anconeus

A

Lateral epicondyle of the humerus

33
Q

Insertion of the anconeus

A

Olecranon process and
posterior, proximal surface of
ulna

34
Q

Actions of the anconeus

A

Extends the elbow

35
Q

Origin of the pronator quadratus

A

Medial, anterior surface of distal ulna

36
Q

Insertion of the pronator quadratus

A

Lateral, anterior surface of distal radius

37
Q

Action of the pronator quadratus

A

Pronate the forearm

38
Q

Synergists for Elbow Extension

A 
Triceps brachii (all heads)
Anconeus
39
Q

Synergists for Forearm Supination (Proximal and Distal Radioulnar Joints

A

Biceps brachii
Supinator
Brachioradialis (assists)

40
Q

Synergists – Forearm Pronation (Proximal

and Distal Radioulnar Joints)

A

Pronator teres
Pronator quadratus
Brachioradialis (assists)

41
Q

Synergists – Elbow Flexion

A 
Biceps brachii
Brachialis
Brachioradialis
Flexor carpi radialis (assists)
Flexor carpi ulnaris (assists)
Palmaris longus (assists)
Pronator teres (assists)
Extensor carpi radialis longus (assists)
Extensor carpi radialis brevis (assists)

KIN245 (14 decks)

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