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Flashcards in 1. Elbow joint Deck (12)
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1

name the articular surfaces of the elbow joint

- trochlea of humerus with trochlea notch of ulna
- capitulum of humerus with head of radius

2

which ligaments strengthen the capsule of the elbow joint, what are their attachments

1. radial collateral ligament: extends from lateral humerus epicondyle to lateral proximal surface of ulna (blends with anular ligament)

2. ulnar collateral ligament: extends from medial humeral epicondyle to coronoid process and olecranon of ulna

3

name 3 clinically important bursae of the elbow

1. subcutaneous olecranon bursa - between olecranon and overlying subcutaneous connective tissue

2. subtendinous olecranon bursa - between olecranon and triceps brachii tendon

3. intratendinous olecranon bursa - within triceps brachii tendon

4

describe the arterial supply of the elbow

cubital anastamosis - includes branches from brachial artery and profunda brachii

5

which muscles enable elbow flexion

1. brachialis
2. biceps brachii
3. brachioradialis

6

which muscles enable elbow extension

triceps brachii (+anconeus)

7

which structures limit flexion at the elbow

1. muscles: triceps brachii
2. posterior joint capsule
3. soft tissue apposition between anterior arm and forearm
4. bony apposition between head of radius and radial fossa of humerus

8

which structures limit extension at the elbow

1. flexor muscles of elbow
2. anterior joint capsule
3. bony apposition between olecranon of ulna and olecranon fossa of humerus

9

which joint is also enclosed in the elbow capsule

proximal radio-ulnar joint: head of radius and radial notch of ulna

10

what type of joint is the proximal radio-ulnar joint

pivot

11

how is the radial head held in place on ulna

anular ligament of radius

12

which movements does the proximal radio-ulnar joint allow: and which muscles mediate this

- supination: biceps brachii and supinator
- pronation: pronator teres and pronator quadratus