OIAN OF ELBOW

Biceps brachii

• O: Long → supraglenoid tubercle

  • Short → coracoid process

• I: Radial tuberosity

• A: Flexion + supination

• N: Musculocutaneous nerve

brachialis

• O: Anterior humerus

• I: Coronoid process + ulnar tuberosity

• A: Primary flexion

• N: Musculocutaneous nerve

brachioradialis

• O: Lateral supracondylar ridge

• I: Distal radius

• A: Flexion (neutral position)

• N: Radial nerve

triceps brachii

• O:

  • Long → infraglenoid tubercle

  • Lateral → posterior humerus

  • Medial → posterior humerus

• I: Olecranon process

• A: Elbow and shoulder Extension

• N: Radial nerve

Anconeus

• O: Lateral epicondyle

• I: Olecranon

• A: Assists extension

• N: Radial nerve

Supinator

• O: Lateral epicondyle + ulna

• I: Proximal radius

• A: Supination

• N: Radial nerve

Pronator Teres

• O: Medial epicondyle + coronoid process

• I: ¼ radius

• A: Pronation + assists flexion

• N: Median nerve

Pronator Quadratus

O: Distal ulna

• I: Distal radius

• A: Pronation

• N: Median nerve