Forearm Flexors Flashcards
Flexor digitorum superficialis - Origin
Humeroulnar head:
- Medial epicondyle of humerus via. Common flexor tendon
- Coronoid process of ulna
Radial head:
1. Proximal 1/2 of anterior shaft of radius (distal to radial tuberosity)
Flexor digitorum superficialis - insertion
Anterior surface of adjacent sides of middle phalanges of fingers 2-5
Flexor digitorum superficialis - actions
- Flexion of fingers 2-5 at MCP and PIP joints
- Flexion of hand at wrist joint
- Flexion of forearm at elbow joint
Flexor digitorum superficialis - innervation
Median nerve
Flexor digitorum superficialis - arterial supply
Ulnar and radial arteries
Flexor digitorum profunds - origin
- Medial anterior surface of proximal 1/2 of ulna
2. Interosseous membrane
Flexor digitorum profunds - insertion
Anterior surface of distal phalanges of fingers 2-5
Flexor digitorum profundus - actions
- Flexion of fingers 2-5 at MCP, PIP and DIP joints
2. Flexion of hand at wrist joint
Flexor digitorum profundus - innervation
Median and ulnar nerves
Flexor digitorum profundus - arterial supply
Ulnar, radial and interosseous arteries
Flexor pollicis longus - origin
- Anterior surface of radius
- Interosseous membrane
- Medial epicondyle of humerus
- Coronoid process of ulna
Flexor pollicis longus - insertion
Anterior aspect of base of distal phalanx of thumb
Flexor pollicis longus - actions
- Flexion of thumb at CMC, MCP and IP joints
- Flexion of hand at wrist joint
- Radial deviation of hand at wrist joint
- Flexion of forearm at elbow joint
- Pronation of forearm at radioulnar joint
Flexor pollicis longus - innervation
Median nerve
Flexor pollicis longus - arterial supply
Radial and anterior interosseous arteries
Palmaris longus - origin
Medial epicondyle of humer via. Common flexor tendon
Palmaris longus - insertion
- Palmar aponerosis
2. Flexor returnaculum
Palmaris longus - actions
- Flexion of hand at wrist joint
- Ulnar deviation of hand at wrist joint
- Radial deviation of hand at wrist joint
- Flexion of forearm at elbow joint
- Pronation of forearm at radioulnar joint
- Wrinkling of skin of palm
Palmaris longus - innervation
Median nerve
Palmaris longus - arterial supply
Ulnar artery
Pronator quadratus - origin
Anterior distal 1/4 of ulna
Pronator quadratus - insertion
Anterior distal 1/4 of radius
Pronator quadratus - action
Pronation of forearm at radioulnar joint
Pronator quadratus - arterial supply
Anterior interosseous artery