1. Elbow joint Flashcards
name the articular surfaces of the elbow joint
- trochlea of humerus with trochlea notch of ulna
- capitulum of humerus with head of radius
which ligaments strengthen the capsule of the elbow joint, what are their attachments
- radial collateral ligament: extends from lateral humerus epicondyle to lateral proximal surface of ulna (blends with anular ligament)
- ulnar collateral ligament: extends from medial humeral epicondyle to coronoid process and olecranon of ulna
name 3 clinically important bursae of the elbow
- subcutaneous olecranon bursa - between olecranon and overlying subcutaneous connective tissue
- subtendinous olecranon bursa - between olecranon and triceps brachii tendon
- intratendinous olecranon bursa - within triceps brachii tendon
describe the arterial supply of the elbow
cubital anastamosis - includes branches from brachial artery and profunda brachii
which muscles enable elbow flexion
- brachialis
- biceps brachii
- brachioradialis
which muscles enable elbow extension
triceps brachii (+anconeus)
which structures limit flexion at the elbow
- muscles: triceps brachii
- posterior joint capsule
- soft tissue apposition between anterior arm and forearm
- bony apposition between head of radius and radial fossa of humerus
which structures limit extension at the elbow
- flexor muscles of elbow
- anterior joint capsule
- bony apposition between olecranon of ulna and olecranon fossa of humerus
which joint is also enclosed in the elbow capsule
proximal radio-ulnar joint: head of radius and radial notch of ulna
what type of joint is the proximal radio-ulnar joint
pivot
how is the radial head held in place on ulna
anular ligament of radius
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
