Structures

  • Flexor carpi ulnaris
  • Palmaris longus
  • Flexor carpi radialis
  • Pronator teres
  • Palmar aponeurosis
MuscleActionOriginInsertionInnervationBlood supply
Flexor carpi ulnaris- Flexion of wrist
- Adduction of wrist
- Humeral head: medial epicondyle of humerus
- Ulnar head: olecranon and posterior border of ulna
- Pisiform bone
- Hook of hamate bone
- 5th metacarpal base
- Ulnar nerve: C7,8- Ulnar artery
Palmaris longus- Flexion of wrist
- Tightens palmar aponeurosis
- Medial epicondyle of humerus- Distal half of flexor retinaculum and palmar aponeurosis- Median nerve: C7,8- Ulnar artery
Flexor carpi radialis- Flexion of wrist
- Abduction of wrist
- Medial epicondyle of humerus- 2nd and 3rd metacarpal base- Median nerve: C6,7- Ulnar artery
Pronator teres- Pronation
- Weak flexion of elbow
- Humeral head: Medial epicondyle of humerus
- Ulnar head: Coronoid process
- Middle of lateral radial surface- Median nerve: C6,7- Ulnar artery