Origin
Upper 3/4 anterior & medial surfaces of ulna. Interosseous membrane
Insertion
Palmar surface of distal phalanges (digits 2-5)
Actions
- Flexes the metacarpophalangeal and interphalangeal joints of digits 2-5
- Weak assistance in wrist flexion
Innervation
- Lateral part (digits 2-3): Anterior interosseous branch of the median nerve (C8-T1)
- Medial part (digits 4-5): Ulnar nerve (C8, T1)
Blood Supply
- Anterior interosseous artery
Would you like to learn more about the flexor digitorum profundus muscle? Then check out the flexor digitorum profundus muscle article and video by clicking the link below: Flexor Digitorum Profundus Muscle Anatomy
