Flexor Digitorum Profundus Muscle
Origin: Anteromedial surfaces of the superior three-quarters of the ulna and adjacent interosseous membrane
Insertion: Volar surface of the distal phalanx of the four digits
Actions: Flexion of the digits
Innervation: Ulnar Nerve (C8, T1 ) and Anterior Interosseous Branch of the Median Nerve
Blood Supply: Muscular branches and the anterior interosseous artery from the ulnar artery and muscular branches from the radial artery
Primary Actions of the Flexor Digitorum Profundus
1. Flexion of the digits at the proximal interphalangeal joints
Agonists:
- Flexor Digitorum Superficialis
Antagonists:
- Lumbricals
- Dorsal Interossei
- Palmar Interossei
- Extensor Digitorum
- Extensor Indicis (second digit)
- Extensor Digiti Minimi (fifth digit)
2. Flexion of the digits at the distal interphalangeal joints
Agonists: None
Antagonists:
- Lumbricals
- Dorsal Interossei
- Palmar Interossei
- Extensor Digitorum
- Extensor Indicis (second digit)
- Extensor Digiti Minimi (fifth digit)
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Secondary Actions of the Flexor Digitorum Profundus
1. Assists with flexion of the digits at the metacarpophalangeal joints
Agonists:
- Flexor Digitorum Superficialis
- Dorsal Interossei
- Flexor Digiti Minimi (fifth digit)
- Palmar Interossei
- Lumbricals
Antagonists:
- Extensor Digitorum
- Extensor Indicis
- Extensor Digiti Minimi
2. Assists with flexion of the wrist
Agonists:
- Flexor Carpi Radialis
- Palmaris Longus
- Flexor Carpi Ulnaris
Antagonists:
- Extensor Carpi Radialis Longus
- Extensor Carpi Radialis Brevis
- Extensor Carpi Ulnaris
Information about cause and effect of Flexor Digitorum Profundus pain: Flexor Digitorum Profundus Muscle: Twitching Fingers, Hand Finger Pain
An excellent book for those beginning the study of anatomy. Coloring helps memory retention.
For intermediary anatomy students learning skeletal and muscle structure.
For beginning and intermediary anatomy . Muscle overlays on the human body. Excellent visuals!
