UL- Elbow

Question 1

movements of elbow

Answer 1

• flexion/ extension
• pronation/ supination

Question 2

muscles in EXTENSION of elbow (2)

Answer 2

• triceps brachii
• anconaeus

Question 3

Triceps info

Answer 3

ORIGIN
Long Head
– Infraglenoid Tubercle
Lateral Head
– Posterior/lateral surface proximal ½ humerus
Medial Head
– Posterior humerus below &medial to lateral head

Insertion
- olecranon

Actions:
1. Elbow extension
2. LH– Glenohumeral extension & adduction

NERVE: Radial nerve (c7,c8)

Question 4

Anconaeus info

Answer 4

ORIGIN
- lateral condyle
(posterior surface)

INSERTION
- olecranon

Actions
1. Elbow extension

NERVE: Radial nerve C7 & C8

Question 5

muscles in FLEXION of elbow (4)

Answer 5

• biceps brachii
• brachialis
• brachioradialis
• pronator teres

Question 6

Biceps brachii info

Answer 6

ORIGIN
Long Head
– Supraglenoid Tubercle

Short Head
– Coracoid Process

INSERTION
- Radial Tuberosity

Actions
1. Elbow Flexion
2. Forearm Supination

NERVE: Musculocuntaneous nerve

Question 7

Brachialis info

Answer 7

Origin
- humeral shaft
(Distal 2/3rds)

Insertion
- Ulna tuberosity

Actions
1. Elbow flexion
2. Pulls joint capsule away from joint during flexion

Nerve:
-Musculocutaneous nerve C5,6
- radial nerve c5,6

Question 8

Brachioradialis info

Answer 8

ORIGIN
- supracondylar ridge of humerus

INSERTION
- just above styloid process on radius

ACTIONS
1. Elbow flexion
2.Returns forearm to mid position from extremes of pronation & supination

NERVE: Radial nerve C5,6

Question 9

muscles in PRONATION of elbow

Answer 9

• brachioradialis
• pronator teres
• pronator quadratus

Question 10

pronator teres info

Answer 10

Origin:
Humeral Head
-medial supracondylar ridge

Ulnar Head
- Pronator ridge
(inferior & medial to coronoid process)

INSERTION
- lateral surface of radius
(Via flat tendon)

ACTIONS:
1. pronation of elbow

Nerve: median nerve C6,7

Question 11

pronator quadratus info

Answer 11

ORIGIN
- anterior surface of ulna
( Distal ¼)

INSERTION
- anterior surface of radius
(Distal ¼)

ACTIONS
1. Pronation of elbow
2. Protects the inferior radioulnar joint

NERVE: Median nerve C8, T1

Question 12

muscles in SUPINATION of elbow

Answer 12

SUPINATOR

BICEPS BRACHII

BRACHIORADIALIS

Question 13

Supinator info

Answer 13

ORIGIN
- Lateral epicondyle
(Radial collateral ligament)

INSERTION
- proximal radius
(Posterior, lateral, anterior)

Actions:
1. Supination

Nerve: Radial nerve C5,6